[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/imports/ClassClashStarImport.fir.kt

@@ -73,4 +73,4 @@ fun test(b: B) {
 
     val b_4 = <!UNRESOLVED_REFERENCE!>a<!>.<!UNRESOLVED_REFERENCE!>B<!>()
     b_4.<!UNRESOLVED_REFERENCE!>m2<!>()
-}
+}