[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/fir/analysis-tests/testData/resolveWithStdlib/javaLangComparator.fir.txt

@@ -0,0 +1,7 @@
+FILE: javaLangComparator.kt
+    public final fun test_2(list: R|kotlin/collections/List<kotlin/Int>|): R|kotlin/Unit| {
+        lval comp: R|java/util/Comparator<ft<kotlin/Int, kotlin/Int?>!>| = Q|java/util|.R|java/util/Comparator|<R|ft<kotlin/Int, kotlin/Int?>!|>(<L> = Comparator@fun <anonymous>(x: R|ft<kotlin/Int, kotlin/Int?>!|, y: R|ft<kotlin/Int, kotlin/Int?>!|): R|kotlin/Int| {
+            ^ Int(1)
+        }
+        )
+    }