[FE] Support multiple candidates for extension receiver

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroup.kt

@@ -20,6 +20,6 @@ fun test() {
     <!OVERLOAD_RESOLUTION_AMBIGUITY!>supertypeMember<!>()
     <!OVERLOAD_RESOLUTION_AMBIGUITY!>member<!>()
     <!AMBIGUOUS_CALL_WITH_IMPLICIT_CONTEXT_RECEIVER!>supertypeExtension()<!>
-    <!AMBIGUOUS_CALL_WITH_IMPLICIT_CONTEXT_RECEIVER!>supertypeExtensionGeneric()<!>
+    <!AMBIGUOUS_CALL_WITH_IMPLICIT_CONTEXT_RECEIVER!><!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>supertypeExtensionGeneric<!>()<!>
     <!MULTIPLE_ARGUMENTS_APPLICABLE_FOR_CONTEXT_RECEIVER!>supertypeContextual()<!>
 }