Added diagnostic tests for inference and incorporation

compiler/testData/diagnostics/tests/inference/commonSystem/genericCandidateInGenericClass.txt

@@ -0,0 +1,12 @@
+package
+
+public fun </*0*/ E> GenericClass<kotlin.List<E>>.bar(): kotlin.Unit
+
+internal final class GenericClass</*0*/ out T> {
+    public constructor GenericClass</*0*/ out T>(/*0*/ value: T)
+    internal final val value: T
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final fun </*0*/ P> foo(/*0*/ extension: T.() -> P): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}