[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/controlStructures/improperElseInExpression.kt

@@ -30,5 +30,5 @@ fun example() {
         return <!TYPE_MISMATCH!><!INVALID_IF_AS_EXPRESSION!>if<!> (true) true<!>
     }
 
-    return <!NI;TYPE_MISMATCH!>if (true) <!OI;CONSTANT_EXPECTED_TYPE_MISMATCH!>true<!> else {}<!>
-}
+    return <!TYPE_MISMATCH{NI}!>if (true) <!CONSTANT_EXPECTED_TYPE_MISMATCH{OI}!>true<!> else {}<!>
+}