Add feature that allows references to synthetic properties with warning

See KT-35933 for details

compiler/testData/diagnostics/tests/syntheticExtensions/javaProperties/PartiallySupportedSyntheticJavaPropertyReference.fir.kt

@@ -0,0 +1,17 @@
+// !LANGUAGE: +NewInference +ReferencesToSyntheticJavaProperties
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_EXPRESSION
+
+// FILE: KotlinFile.kt
+
+fun call(c: Any) {}
+
+fun test() {
+    JavaClass::foo
+    call(JavaClass::foo)
+}
+
+// FILE: JavaClass.java
+
+public class JavaClass {
+    public String getFoo() {}
+}

compiler/testData/diagnostics/tests/syntheticExtensions/javaProperties/PartiallySupportedSyntheticJavaPropertyReference.kt

@@ -0,0 +1,17 @@
+// !LANGUAGE: +NewInference +ReferencesToSyntheticJavaProperties
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_EXPRESSION
+
+// FILE: KotlinFile.kt
+
+fun call(c: Any) {}
+
+fun test() {
+    JavaClass::<!CALLABLE_REFERENCE_TO_JAVA_SYNTHETIC_PROPERTY!>foo<!>
+    call(JavaClass::<!CALLABLE_REFERENCE_TO_JAVA_SYNTHETIC_PROPERTY!>foo<!>)
+}
+
+// FILE: JavaClass.java
+
+public class JavaClass {
+    public String getFoo() {}
+}

compiler/testData/diagnostics/tests/syntheticExtensions/javaProperties/PartiallySupportedSyntheticJavaPropertyReference.txt

@@ -0,0 +1,12 @@
+package
+
+public fun call(/*0*/ c: kotlin.Any): kotlin.Unit
+public fun test(): kotlin.Unit
+
+public open class JavaClass {
+    public constructor JavaClass()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open fun getFoo(): kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/syntheticExtensions/javaProperties/SyntheticJavaPropertyReference.fir.kt

@@ -1,6 +1,14 @@
+// !LANGUAGE: -ReferencesToSyntheticJavaProperties
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_EXPRESSION
+
 // FILE: KotlinFile.kt
 
-fun bar() = JavaClass::foo
+fun call(c: Any) {}
+
+fun test() {
+    JavaClass::foo
+    call(JavaClass::foo)
+}
 
 // FILE: JavaClass.java
 

compiler/testData/diagnostics/tests/syntheticExtensions/javaProperties/SyntheticJavaPropertyReference.kt

@@ -1,6 +1,14 @@
+// !LANGUAGE: -ReferencesToSyntheticJavaProperties
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_EXPRESSION
+
 // FILE: KotlinFile.kt
 
-fun bar() = JavaClass::<!UNSUPPORTED!>foo<!>
+fun call(c: Any) {}
+
+fun test() {
+    JavaClass::<!UNSUPPORTED!>foo<!>
+    call(JavaClass::<!UNSUPPORTED!>foo<!>)
+}
 
 // FILE: JavaClass.java
 

compiler/testData/diagnostics/tests/syntheticExtensions/javaProperties/SyntheticJavaPropertyReference.txt

@@ -1,6 +1,7 @@
 package
 
-public fun bar(): kotlin.reflect.KProperty1<JavaClass, kotlin.String!>
+public fun call(/*0*/ c: kotlin.Any): kotlin.Unit
+public fun test(): kotlin.Unit
 
 public open class JavaClass {
     public constructor JavaClass()