[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/secondaryConstructors/kt6993.kt

@@ -2,4 +2,4 @@
 // !WITH_NEW_INFERENCE
 class X<T>(val t: T) {
     constructor(t: T, i: Int) : this(<!TYPE_MISMATCH!>i<!>)
-}
+}