SLC: use fully expanded type when computing nullability

^KT-62757 fixed

compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/typeAlias.java

@@ -0,0 +1,3 @@
+public final class TypeAliasKt /* TypeAliasKt*/ {
+  public static final void foo(@org.jetbrains.annotations.Nullable() java.lang.String);//  foo(java.lang.String)
+}

compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/typeAlias.kt

@@ -0,0 +1,5 @@
+// TypeAliasKt
+
+typealias NullableString = String?
+
+fun foo(ns: NullableString) {}

compiler/tests-gen/org/jetbrains/kotlin/asJava/CompilerLightClassTestGenerated.java

@@ -585,6 +585,11 @@ public class CompilerLightClassTestGenerated extends AbstractCompilerLightClassT
             runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/Trait.kt");
         }
 
+        @TestMetadata("typeAlias.kt")
+        public void testTypeAlias() throws Exception {
+            runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/typeAlias.kt");
+        }
+
         @TestMetadata("UnitAsGenericArgument.kt")
         public void testUnitAsGenericArgument() throws Exception {
             runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/UnitAsGenericArgument.kt");