[compiler] introduce dedicated Fir declaration for dangling modifier lists (KTIJ-23008)

ensure fir annotations are included in FirDanglingModifierList and resolved,
dedicated DanglingTopLevelModifierListStructureElement exists for top
level lists only, class level lists are processed by containing structure
element

compiler/testData/diagnostics/tests/annotations/DanglingMixed.kt

@@ -1,6 +1,7 @@
+// FIR_IDENTICAL
 annotation class Ann
 annotation class Ann2
-
+interface I {}
 class C {
     fun foo() {
         class Local {
@@ -9,6 +10,12 @@ class C {
             @Ann2(<!TOO_MANY_ARGUMENTS!>1<!>)
             @<!UNRESOLVED_REFERENCE!>Ann4<!><!SYNTAX!><!>
         }
+        val i = object : I {
+            @<!UNRESOLVED_REFERENCE!>Ann0<!>
+            @Ann @<!UNRESOLVED_REFERENCE!>Ann3<!>
+            @Ann2(<!TOO_MANY_ARGUMENTS!>1<!>)
+            @<!UNRESOLVED_REFERENCE!>Ann4<!><!SYNTAX!><!>
+        }
     }
     @<!UNRESOLVED_REFERENCE!>Ann0<!>
     @Ann @<!UNRESOLVED_REFERENCE!>Ann3<!>