[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/multifile/simpleImportNested.fir.txt

@@ -0,0 +1,21 @@
+FILE: A.kt
+    public final class MyClass : R|kotlin/Any| {
+        public constructor(): R|a/MyClass| {
+            super<R|kotlin/Any|>()
+        }
+
+        public open class MyNested : R|kotlin/Any| {
+            public constructor(): R|a/MyClass.MyNested| {
+                super<R|kotlin/Any|>()
+            }
+
+        }
+
+    }
+FILE: B.kt
+    public final class YourClass : R|a/MyClass.MyNested| {
+        public constructor(): R|b/YourClass| {
+            super<R|a/MyClass.MyNested|>()
+        }
+
+    }