Tests for more special names

compiler/testData/diagnostics/tests/duplicateJvmSignature/specialNames/classObject.kt

@@ -0,0 +1,5 @@
+class C {
+    class object {}
+
+    <!CONFLICTING_JVM_DECLARATIONS!>val `object$`<!> = C
+}

compiler/testData/diagnostics/tests/duplicateJvmSignature/specialNames/instance.kt

@@ -0,0 +1,3 @@
+object <!CONFLICTING_JVM_DECLARATIONS!>O<!> {
+    <!CONFLICTING_JVM_DECLARATIONS!>val `instance$`: O<!> = null!!
+}