Add JVM ABI K1/K2 consistency tests

compiler/testData/codegen/box/callableReference/bound/equals/nullableReceiverInEquals.jvm_abi.txt

@@ -0,0 +1,9 @@
+MODULE main
+	CLASS NullableReceiverInEqualsKt.class
+		PACKAGE METADATA
+			PROPERTY getA_foo()Lkotlin/reflect/KFunction;
+				Property: class.metadata.property.returnType
+					K1
+						kotlin/reflect/KFunction1<A, kotlin/Unit>
+					K2
+						@kotlin/ExtensionFunctionType kotlin/reflect/KFunction1<A, kotlin/Unit>

compiler/testData/codegen/box/callableReference/bound/equals/nullableReceiverInEquals.kt

@@ -5,6 +5,8 @@
 // TODO: investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS
 
+// JVM_ABI_K1_K2_DIFF: KT-63859
+
 // See https://youtrack.jetbrains.com/issue/KT-14938
 // WITH_REFLECT