[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/resolve/expresssions/overriddenJavaGetter.fir.txt

@@ -0,0 +1,16 @@
+FILE: Derived.kt
+    public final class Derived : R|Base| {
+        public constructor(): R|Derived| {
+            super<R|Base|>()
+        }
+
+        public final override fun getSomething(): R|kotlin/String| {
+            ^getSomething String(42)
+        }
+
+    }
+    public final fun test(): R|kotlin/Unit| {
+        lval d: R|Derived| = R|/Derived.Derived|()
+        lval res1: R|kotlin/String| = R|<local>/d|.R|/Derived.something|
+        lval res2: R|kotlin/String| = R|<local>/d|.R|/Derived.getSomething|()
+    }