Fix SOE in SignatureEnhancement::extractNullability

The problem was that `resolveTypeQualifierAnnotation` actually doesn't
guarantee that `typeQualifierAnnotation` is javax.annotation.NonNull
with argument

It could be just any type qualifier (see the test)

compiler/testData/foreignAnnotations/tests/irrelevantQualifierNicknames.kt

@@ -0,0 +1,85 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
+
+// FILE: UnknownQualifier.java
+import javax.annotation.*;
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.annotation.meta.TypeQualifier;
+import javax.annotation.meta.When;
+
+@Documented
+@TypeQualifier
+@Retention(RetentionPolicy.RUNTIME)
+public @interface UnknownQualifier {
+}
+
+// FILE: UnknownQualifierNickname.java
+import javax.annotation.*;
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.annotation.meta.TypeQualifierNickname;
+import javax.annotation.meta.When;
+
+@Documented
+@TypeQualifierNickname
+@UnknownQualifier
+@Retention(RetentionPolicy.RUNTIME)
+public @interface UnknownQualifierNickname {
+}
+
+// FILE: UnknownQualifierDefault.java
+import javax.annotation.*;
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.annotation.meta.TypeQualifierDefault;
+import javax.annotation.meta.When;
+
+@Documented
+@TypeQualifierDefault({ElementType.METHOD, ElementType.PARAMETER})
+@UnknownQualifier
+@Retention(RetentionPolicy.RUNTIME)
+public @interface UnknownQualifierDefault {
+}
+
+// FILE: UnknownQualifierNicknameDefault.java
+import javax.annotation.*;
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.annotation.meta.TypeQualifierDefault;
+import javax.annotation.meta.When;
+
+@Documented
+@TypeQualifierDefault({ElementType.METHOD, ElementType.PARAMETER})
+@UnknownQualifierNickname
+@Retention(RetentionPolicy.RUNTIME)
+public @interface UnknownQualifierNicknameDefault {
+}
+
+// FILE: A.java
+
+import javax.annotation.*;
+
+@UnknownQualifierDefault
+public class A {
+    @UnknownQualifierNicknameDefault
+    public static class B {
+        @UnknownQualifier
+        public static String foo(@UnknownQualifierNickname String x) { return null; }
+    }
+}
+
+// FILE: main.kt
+
+fun main() {
+    A.B.foo(null).hashCode()
+}

compiler/testData/foreignAnnotations/tests/irrelevantQualifierNicknames.txt

@@ -0,0 +1,48 @@
+package
+
+public fun main(): kotlin.Unit
+
+@UnknownQualifierDefault public open class A {
+    public constructor A()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    @UnknownQualifierNicknameDefault public open class B {
+        public constructor B()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+        // Static members
+        @UnknownQualifier public open fun foo(/*0*/ @UnknownQualifierNickname x: kotlin.String!): kotlin.String!
+    }
+}
+
+@kotlin.annotation.MustBeDocumented @javax.annotation.meta.TypeQualifier @kotlin.annotation.Retention(value = AnnotationRetention.RUNTIME) public final annotation class UnknownQualifier : kotlin.Annotation {
+    public constructor UnknownQualifier()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+@kotlin.annotation.MustBeDocumented @javax.annotation.meta.TypeQualifierDefault(value = {ElementType.METHOD, ElementType.PARAMETER}) @UnknownQualifier @kotlin.annotation.Retention(value = AnnotationRetention.RUNTIME) public final annotation class UnknownQualifierDefault : kotlin.Annotation {
+    public constructor UnknownQualifierDefault()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+@kotlin.annotation.MustBeDocumented @javax.annotation.meta.TypeQualifierNickname @UnknownQualifier @kotlin.annotation.Retention(value = AnnotationRetention.RUNTIME) public final annotation class UnknownQualifierNickname : kotlin.Annotation {
+    public constructor UnknownQualifierNickname()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+@kotlin.annotation.MustBeDocumented @javax.annotation.meta.TypeQualifierDefault(value = {ElementType.METHOD, ElementType.PARAMETER}) @UnknownQualifierNickname @kotlin.annotation.Retention(value = AnnotationRetention.RUNTIME) public final annotation class UnknownQualifierNicknameDefault : kotlin.Annotation {
+    public constructor UnknownQualifierNicknameDefault()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}