[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/complexComparison.kt

@@ -7,7 +7,7 @@ fun foo(x: String?, y: String?, z: String?, w: String?) {
     if (x != null || y != null || (<!DEBUG_INFO_CONSTANT!>x<!> != z && <!DEBUG_INFO_CONSTANT!>y<!> != z))
         z<!UNSAFE_CALL!>.<!>length
     else
-        <!OI;DEBUG_INFO_CONSTANT!>z<!><!UNSAFE_CALL!>.<!>length
+        <!DEBUG_INFO_CONSTANT{OI}!>z<!><!UNSAFE_CALL!>.<!>length
     if (x == null || y == null || (x != z && y != z))
         z<!UNSAFE_CALL!>.<!>length
     else
@@ -20,4 +20,4 @@ fun foo(x: String?, y: String?, z: String?, w: String?) {
         <!DEBUG_INFO_SMARTCAST!>y<!>.length
     else
         y<!UNSAFE_CALL!>.<!>length
-}
+}