[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/callableReference/generic/nestedCallWithOverload.fir.kt

@@ -19,4 +19,4 @@ fun test() {
     baz<(Int) -> Unit>(id(::foo), id(id(::foo)))
     baz(id(::foo), id(id<(Int) -> Unit>(::foo)))
     baz(id(::foo), id<(Int) -> Unit>(id(::foo)))
-}
+}