[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/modifiers/const/applicability.kt

@@ -1,4 +1,4 @@
-// !DIAGNOSTICS:-UNUSED_VARIABLE,-CAST_NEVER_SUCCEEDS,-DIVISION_BY_ZERO
+// !DIAGNOSTICS: -UNUSED_VARIABLE -CAST_NEVER_SUCCEEDS -DIVISION_BY_ZERO
 
 import kotlin.reflect.KProperty