[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/generics/nullability/smartCasts.kt

@@ -15,9 +15,9 @@ fun <T : CharSequence?> foo(x: T) {
         <!DEBUG_INFO_SMARTCAST!>x<!>.length
         x<!UNNECESSARY_SAFE_CALL!>?.<!>length
 
-        <!NI;DEBUG_INFO_SMARTCAST!>x<!>.bar1()
+        <!DEBUG_INFO_SMARTCAST{NI}!>x<!>.bar1()
         x.bar2()
-        <!NI;DEBUG_INFO_SMARTCAST!>x<!>.<!OI;TYPE_INFERENCE_UPPER_BOUND_VIOLATED!>bar3<!>()
+        <!DEBUG_INFO_SMARTCAST{NI}!>x<!>.<!TYPE_INFERENCE_UPPER_BOUND_VIOLATED{OI}!>bar3<!>()
         <!DEBUG_INFO_SMARTCAST!>x<!>.bar4()
 
 
@@ -30,7 +30,7 @@ fun <T : CharSequence?> foo(x: T) {
         <!DEBUG_INFO_SMARTCAST!>x<!>.length
         x<!UNNECESSARY_SAFE_CALL!>?.<!>length
 
-        <!NI;DEBUG_INFO_SMARTCAST!>x<!>.bar1()
+        <!DEBUG_INFO_SMARTCAST{NI}!>x<!>.bar1()
         x.bar2()
         <!DEBUG_INFO_SMARTCAST!>x<!>.bar3()
     }
@@ -39,7 +39,7 @@ fun <T : CharSequence?> foo(x: T) {
         <!DEBUG_INFO_SMARTCAST!>x<!>.length
         x<!UNNECESSARY_SAFE_CALL!>?.<!>length
 
-        <!NI;DEBUG_INFO_SMARTCAST!>x<!>.bar1()
+        <!DEBUG_INFO_SMARTCAST{NI}!>x<!>.bar1()
         x.bar2()
         <!DEBUG_INFO_SMARTCAST!>x<!>.bar3()
     }