[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/smartCasts/elvis/impossible.kt

@@ -18,7 +18,7 @@ fun foo(list: StringList, arg: Unstable) {
     list.remove(arg.first)
     if (arg.first?.isEmpty() ?: false) {
         // Should be still resolved to extension, without smart cast or smart cast impossible
-        list.remove(<!OI;SMARTCAST_IMPOSSIBLE!>arg.first<!>)
+        list.remove(<!SMARTCAST_IMPOSSIBLE{OI}!>arg.first<!>)
     }
 }
 
@@ -36,6 +36,6 @@ fun bar(list: BooleanList, arg: UnstableBoolean) {
     list.remove(arg.first)
     if (arg.first ?: false) {
         // Should be still resolved to extension, without smart cast or smart cast impossible
-        list.remove(<!OI;SMARTCAST_IMPOSSIBLE!>arg.first<!>)
+        list.remove(<!SMARTCAST_IMPOSSIBLE{OI}!>arg.first<!>)
     }
 }