[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/j+k/MapEntry.fir.txt

@@ -0,0 +1,13 @@
+FILE: main.kt
+    public final class MyMapEntry : R|Test.MapEntryImpl| {
+        public constructor(): R|MyMapEntry| {
+            super<R|Test.MapEntryImpl|>()
+        }
+
+    }
+    public final fun test(): R|kotlin/Unit| {
+        lval b: R|MyMapEntry| = R|/MyMapEntry.MyMapEntry|()
+        lval key: R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!| = R|<local>/b|.R|/Test.MapEntryImpl.key|
+        lval value: R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!| = R|<local>/b|.R|/Test.MapEntryImpl.value|
+        R|<local>/b|.R|/Test.MapEntryImpl.setValue|(Null(null))
+    }