[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/operatorRem/deprecatedModConvention.kt

@@ -35,4 +35,4 @@ fun foo() {
 
     OldMod.mod(1)
     ModExtension.mod(1)
-}
+}

compiler/testData/diagnostics/tests/operatorRem/noDeprecatedModConventionWithoutFeature.kt

@@ -35,4 +35,4 @@ fun foo() {
 
     OldMod.mod(1)
     ModExtension.mod(1)
-}
+}

compiler/testData/diagnostics/tests/operatorRem/numberRemConversions.kt

@@ -12,4 +12,4 @@ fun test() {
     fooShort(1 % 1)
 }
 
-public operator fun Int.<!EXTENSION_SHADOWED_BY_MEMBER!>rem<!>(other: Int): Int = 0
+public operator fun Int.<!EXTENSION_SHADOWED_BY_MEMBER!>rem<!>(other: Int): Int = 0

compiler/testData/diagnostics/tests/operatorRem/preferRemWithImplicitReceivers.kt

@@ -17,4 +17,4 @@ fun test() {
     }
 }
 
-fun takeString(s: String) {}
+fun takeString(s: String) {}