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

compiler/testData/diagnostics/tests/scopes/classHeader/classGenericParameters.fir.kt

@@ -1,20 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-
-class A<T : <!OTHER_ERROR!>Nested<!>, F: <!OTHER_ERROR!>Inner<!>, G: <!OTHER_ERROR!>Interface<!>> {
-
-    class Nested
-
-    inner class Inner
-
-    interface Interface
-}
-
-class B<T, F, G> where T : <!OTHER_ERROR!>Nested<!>, F: <!OTHER_ERROR!>Inner<!>, G: <!OTHER_ERROR!>Interface<!> {
-
-    class Nested
-
-    inner class Inner
-
-    interface Interface
-}
-

compiler/testData/diagnostics/tests/scopes/classHeader/classGenericParameters.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 class A<T : <!UNRESOLVED_REFERENCE!>Nested<!>, F: <!UNRESOLVED_REFERENCE!>Inner<!>, G: <!UNRESOLVED_REFERENCE!>Interface<!>> {

compiler/testData/diagnostics/tests/scopes/classHeader/classParents.fir.kt

@@ -2,7 +2,7 @@
 
 interface I<F, G, H>
 
-class A(impl: Interface) : <!OTHER_ERROR!>Nested<!>(), <!OTHER_ERROR!>Interface<!> by impl, <!OTHER_ERROR!>Inner<!>, <!OTHER_ERROR!>I<Nested, Interface, Inner><!> {
+class A(impl: Interface) : <!UNRESOLVED_REFERENCE!>Nested<!>(), <!UNRESOLVED_REFERENCE!>Interface<!> by impl, <!UNRESOLVED_REFERENCE!>Inner<!>, <!UNRESOLVED_REFERENCE!>I<Nested, Interface, Inner><!> {
 
     class Nested
 

compiler/testData/diagnostics/tests/scopes/classHeader/objectParents.fir.kt

@@ -3,7 +3,7 @@ interface I<F, G>
 val aImpl: A.Interface
     get() = null!!
 
-object A : <!OTHER_ERROR!>Nested<!>(), <!OTHER_ERROR!>Interface<!> by aImpl, <!OTHER_ERROR!>I<Nested, Interface><!> {
+object A : <!UNRESOLVED_REFERENCE!>Nested<!>(), <!UNRESOLVED_REFERENCE!>Interface<!> by aImpl, <!UNRESOLVED_REFERENCE!>I<Nested, Interface><!> {
 
     class Nested