[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/when/ReservedExhaustiveWhen.fir.kt

@@ -1,3 +1,12 @@
+/*
+ * KOTLIN DIAGNOSTICS SPEC TEST (NEGATIVE)
+ *
+ * SPEC VERSION: 0.1-152
+ * PRIMARY LINKS: expressions, when-expression -> paragraph 2 -> sentence 1
+ * expressions, when-expression -> paragraph 5 -> sentence 1
+ * expressions, when-expression, exhaustive-when-expressions -> paragraph 2 -> sentence 1
+ */
+
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 infix fun Any.sealed(a: Any?) {}
@@ -34,4 +43,4 @@ fun foo() {
     when {
         else -> {}
     }
-}
+}