[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/annotations/rendering/unusedValue.kt

@@ -8,5 +8,5 @@ annotation class A
 fun test() {
     @A
     var b: @A Int = 0
-    <!UNUSED_VALUE("15", "var b: Int defined in test")!>b =<!> 15
+    <!UNUSED_VALUE("15; var b: Int defined in test")!>b =<!> 15
 }