[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/regressions/OutProjections.kt

@@ -9,7 +9,7 @@ fun <T> f(<!UNUSED_PARAMETER!>expression<!> : T) : G<out T> = G<T>()
 
 fun foo() : G<Point> {
   val p = Point()
-  return <!NI;TYPE_MISMATCH, TYPE_MISMATCH!>f<Point>(p)<!>
+  return <!TYPE_MISMATCH{NI}, TYPE_MISMATCH!>f<Point>(p)<!>
 }
 
 class Out<out T>() {}
@@ -19,4 +19,4 @@ fun <T> fout(<!UNUSED_PARAMETER!>expression<!> : T) : Out<<!REDUNDANT_PROJECTION
 fun fooout() : Out<Point> {
   val p = Point();
   return fout<Point>(p);
-}
+}