[NI] Add resolution applicability for resolved candidates with error

New resolution applicability is needed in cases when error is found,
but candidate still should be selected. Currently there are two cases,
when this behaviour is required:
- unstable smartcast (choose candidate with non-nullable parameter)
- unknown lambda parameter type (against non-functional expected type)

KT-36264

compiler/testData/diagnostics/tests/resolve/kt36264.fir.kt

@@ -0,0 +1,19 @@
+// !WITH_NEW_INFERENCE
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+interface A
+class B : A
+
+val String.ext: A
+    get() = TODO()
+
+class Cls {
+    fun take(arg: B) {}
+
+    fun test(s: String) {
+        if (s.ext is B)
+            take(s.ext)
+    }
+}
+
+fun take(arg: Any) {}

compiler/testData/diagnostics/tests/resolve/kt36264.kt

@@ -0,0 +1,19 @@
+// !WITH_NEW_INFERENCE
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+interface A
+class B : A
+
+val String.ext: A
+    get() = TODO()
+
+class Cls {
+    fun take(arg: B) {}
+
+    fun test(s: String) {
+        if (s.ext is B)
+            take(<!NI;SMARTCAST_IMPOSSIBLE, SMARTCAST_IMPOSSIBLE!>s.ext<!>)
+    }
+}
+
+fun take(arg: Any) {}

compiler/testData/diagnostics/tests/resolve/kt36264.txt

@@ -0,0 +1,26 @@
+package
+
+public val kotlin.String.ext: A
+public fun take(/*0*/ arg: kotlin.Any): kotlin.Unit
+
+public interface 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
+}
+
+public final class B : A {
+    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
+}
+
+public final class Cls {
+    public constructor Cls()
+    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 final fun take(/*0*/ arg: B): kotlin.Unit
+    public final fun test(/*0*/ s: kotlin.String): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/smartCasts/varnotnull/unnecessaryWithMap.fir.kt

@@ -1,4 +1,3 @@
-// !WITH_NEW_INFERENCE
 fun create(): Map<String, String> = null!!
 
 operator fun <K, V> Map<K, V>.iterator(): Iterator<Map.Entry<K, V>> = null!!

compiler/testData/diagnostics/tests/smartCasts/varnotnull/unnecessaryWithMap.kt

@@ -1,4 +1,3 @@
-// !WITH_NEW_INFERENCE
 fun create(): Map<String, String> = null!!
 
 operator fun <K, V> Map<K, V>.iterator(): Iterator<Map.Entry<K, V>> = null!!
@@ -14,7 +13,7 @@ class MyClass {
         m = create()
         // See KT-7428
         for ((k, v) in <!SMARTCAST_IMPOSSIBLE!>m<!>)
-            res <!NI;OVERLOAD_RESOLUTION_AMBIGUITY!>+=<!> (<!NI;DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>k<!>.<!NI;DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>length<!> <!NI;DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>+<!> <!NI;DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>v<!>.<!NI;DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>length<!>)
+            res += (k.length + v.length)
         return res
     }
 }