[TD] Update diagnostics test data due to new test runners

Update includes:
- Changing syntax of `OI/`NI` tags from `<!NI;TAG!>` to `<!TAG{NI}!>`
- Fix some incorrect directives
- Change order of diagnostics in some places
- Remove ignored diagnostics from FIR test data (previously `DIAGNOSTICS` didn't work)
- Update FIR dumps in some places and add `FIR_IDENTICAL` if needed
- Replace all JAVAC_SKIP with SKIP_JAVAC directive

compiler/testData/diagnostics/tests/script/NestedInnerClass.kts

@@ -5,8 +5,8 @@ fun function() = 42
 val property = ""
 
 class Nested {
-    fun f() = <!OI;INACCESSIBLE_OUTER_CLASS_EXPRESSION!>function()<!>
-    fun g() = <!OI;INACCESSIBLE_OUTER_CLASS_EXPRESSION!>property<!>
+    fun f() = <!INACCESSIBLE_OUTER_CLASS_EXPRESSION{OI}!>function()<!>
+    fun g() = <!INACCESSIBLE_OUTER_CLASS_EXPRESSION{OI}!>property<!>
 }
 
 
@@ -22,4 +22,4 @@ inner class Inner {
         fun h() = this@Inner.innerFun()
         fun i() = this@Inner.innerProp
     }
-}
+}