[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/inference/commonSystem/kt32818.fir.kt

@@ -5,4 +5,4 @@ fun <T : Any> nullable(): T? = null
 
 fun test() {
     val value = nullable<Int>() ?: nullable()
-}
+}

compiler/testData/diagnostics/tests/inference/commonSystem/kt32818.kt

@@ -4,5 +4,5 @@
 fun <T : Any> nullable(): T? = null
 
 fun test() {
-    val value = nullable<Int>() ?: <!OI;TYPE_INFERENCE_EXPECTED_TYPE_MISMATCH!>nullable()<!>
-}
+    val value = nullable<Int>() ?: <!TYPE_INFERENCE_EXPECTED_TYPE_MISMATCH{OI}!>nullable()<!>
+}