FIR: add bad test data changes related to not implemented checker

compiler/testData/diagnostics/tests/j+k/specialBuiltIns/hashtableInheritance.fir.kt

@@ -0,0 +1,6 @@
+// FULL_JDK
+
+<!ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED!>class C1<!> : java.util.Hashtable<String, Int>()
+<!ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED!>class C2<!> : java.util.Hashtable<String, Int>() {
+    override fun get(key: String) = 123
+}

compiler/testData/diagnostics/tests/j+k/specialBuiltIns/hashtableInheritance.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FULL_JDK
 
 class C1 : java.util.Hashtable<String, Int>()

compiler/testData/diagnostics/tests/j+k/specialBuiltIns/securityProvider.fir.kt

@@ -0,0 +1,5 @@
+// FULL_JDK
+
+import java.security.Provider
+
+<!ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED!>class Example<!> : Provider("A", 1.0, "B")

compiler/testData/diagnostics/tests/j+k/specialBuiltIns/securityProvider.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // FULL_JDK
 
 import java.security.Provider