[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/inference/publicApproximation/twoIntersections.kt

@@ -21,5 +21,5 @@ fun <S> intersectNoBound(vararg elements: S): S = TODO()
 fun some(a: One, b: Two, c: Three) = intersectNoBound(intersect(a, b), c)
 
 fun test(arg: Base, arg2: Base) {
-    some(O1, O2, O3).<!NI;UNRESOLVED_REFERENCE!>base<!>()
+    some(O1, O2, O3).<!UNRESOLVED_REFERENCE{NI}!>base<!>()
 }