[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/testsWithStdLib/smartcasts/forEachSafe.fir.kt

@@ -9,4 +9,4 @@ fun indexOfMax(a: IntArray): Int? {
         }
     }
     return maxI
-}
+}

compiler/testData/diagnostics/testsWithStdLib/smartcasts/forEachSafe.kt

@@ -4,9 +4,9 @@
 fun indexOfMax(a: IntArray): Int? {
     var maxI: Int? = null
     a.forEachIndexed { i, value ->
-        if (maxI == null || value >= a[<!NI;SMARTCAST_IMPOSSIBLE, SMARTCAST_IMPOSSIBLE!>maxI<!>]) {
+        if (maxI == null || value >= a[<!SMARTCAST_IMPOSSIBLE{NI}, SMARTCAST_IMPOSSIBLE!>maxI<!>]) {
             maxI = i
         }
     }
     return maxI
-}
+}

compiler/testData/diagnostics/testsWithStdLib/smartcasts/forEachUnsafe.kt

@@ -11,4 +11,4 @@ fun indexOfMax(a: IntArray): Int? {
         }
     }
     return maxI
-}
+}