[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/generics/kt34729.kt

@@ -14,6 +14,6 @@ fun <T : ILength> bar(a: (Int) -> T) {
 }
 
 fun test() {
-    foo<String> <!NI;TYPE_MISMATCH!>{ <!OI;TYPE_MISMATCH!><!>}<!>
-    bar<Impl> <!NI;TYPE_MISMATCH, NI;TYPE_MISMATCH!>{ <!OI;TYPE_MISMATCH!><!>}<!>
+    foo<String> <!TYPE_MISMATCH{NI}!>{ <!TYPE_MISMATCH{OI}!><!>}<!>
+    bar<Impl> <!TYPE_MISMATCH{NI}, TYPE_MISMATCH{NI}!>{ <!TYPE_MISMATCH{OI}!><!>}<!>
 }