CLI: suppress warning on JDK 9+ with illegal access to ResourceBundle

The underlying issue is tracked in IDEA-248785.

 #KT-43704 Fixed

compiler/cli/bin/kotlinc.bat

@@ -40,14 +40,20 @@ shift
 goto loop
 :loopend
 
-if "%_KOTLIN_RUNNER%"=="1" (
-  java %JAVA_OPTS% "-Dkotlin.home=%_KOTLIN_HOME%" -cp "%_KOTLIN_HOME%\lib\kotlin-runner.jar" ^
+setlocal EnableDelayedExpansion
+
+call :set_java_version
+if !_java_major_version! geq 9 (
+  rem Workaround the illegal reflective access warning from ReflectionUtil to ResourceBundle.setParent, see IDEA-248785.
+  set JAVA_OPTS=!JAVA_OPTS! "--add-opens" "java.base/java.util=ALL-UNNAMED"
+)
+
+if "!_KOTLIN_RUNNER!"=="1" (
+  java !JAVA_OPTS! "-Dkotlin.home=%_KOTLIN_HOME%" -cp "%_KOTLIN_HOME%\lib\kotlin-runner.jar" ^
     org.jetbrains.kotlin.runner.Main %KOTLIN_OPTS%
 ) else (
-  setlocal EnableDelayedExpansion
   set _ADDITIONAL_CLASSPATH=
 
-  call :set_java_version
   if !_java_major_version! lss 13 (
     set JAVA_OPTS=!JAVA_OPTS! "-noverify"
   )