[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/imports/ImportFromRootPackage.kt

@@ -15,7 +15,7 @@ fun foo(): Klass {
     return Klass()
 }
 
-// FILE: anotherFromRootPackage.kt
+// FILE: yetAnotherFromRootPackage.kt
 package pkg
 
 import Klass
@@ -29,4 +29,4 @@ fun foo(): Klass {
 }
 
 val v: Nested = Nested()
-val x: <!UNRESOLVED_REFERENCE!>NotImported<!> = <!UNRESOLVED_REFERENCE!>NotImported<!>()
+val x: <!UNRESOLVED_REFERENCE!>NotImported<!> = <!UNRESOLVED_REFERENCE!>NotImported<!>()