[FIR] Ignore failing test, improve DiagnosticKind, fix UPPER_BOUND

compiler/testData/diagnostics/tests/regressions/ea65509.fir.kt

@@ -1,5 +0,0 @@
-// !DIAGNOSTICS: -FUNCTION_DECLARATION_WITH_NO_NAME
-class ClassB() {
-    private inner class ClassC: <!SYNTAX!>super<!><!SYNTAX!>.<!>@<!OTHER_ERROR!>ClassA<!>()<!SYNTAX!><!> {
-    }
-}

compiler/testData/diagnostics/tests/regressions/ea65509.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -FUNCTION_DECLARATION_WITH_NO_NAME
 class ClassB() {
     private inner class ClassC: <!SYNTAX!>super<!><!SYNTAX!>.<!>@<!UNRESOLVED_REFERENCE!>ClassA<!>()<!SYNTAX!><!> {

compiler/testData/diagnostics/tests/regressions/itselfAsUpperBoundLocal.fir.kt

@@ -1,5 +1,5 @@
 // !WITH_NEW_INFERENCE
 fun bar() {
-    fun <T: <!OTHER_ERROR!>T?<!>> foo() {}
+    fun <T: <!UNRESOLVED_REFERENCE!>T?<!>> foo() {}
     <!INAPPLICABLE_CANDIDATE!>foo<!>()
 }

compiler/testData/diagnostics/tests/regressions/kt402.fir.kt

@@ -1,7 +1,7 @@
 package kt402
 
 fun getTypeChecker() : (Any)->Boolean {
-  { a : Any -> a is <!OTHER_ERROR!>T<!> } // reports unsupported
+  { a : Any -> a is <!UNRESOLVED_REFERENCE!>T<!> } // reports unsupported
 }
 fun f() : (Any) -> Boolean {
   return { a : Any -> a is String }

compiler/testData/diagnostics/tests/regressions/kt6508.fir.kt

@@ -1,24 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_EXPRESSION
-
-// FILE: foo/View.java
-
-package foo;
-
-public class View {}
-
-// FILE: foo/TextView.java
-
-package foo;
-
-public class TextView extends View {}
-
-// FILE: k.kt
-
-import foo.View
-//import foo.TextView
-
-fun String.gah(view:View ?) {
-    if (view is <!OTHER_ERROR!>TextView<!>)
-        view
-    else <!UNRESOLVED_REFERENCE!>TextView<!>() as foo.TextView
-}

compiler/testData/diagnostics/tests/regressions/kt6508.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_EXPRESSION
 
 // FILE: foo/View.java