[CLI] Restore K2JVMCompilerArguments.classpath and javaModulePath

to support IDEs < 2023.2

Reverts:
- 9dcd40d7b7
- fb66764c4d

KTIJ-25227

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalFirJvmCompilerRunner.kt

@@ -342,7 +342,7 @@ fun CompilerConfiguration.configureBaseRoots(args: K2JVMCompilerArguments) {
         }
     }
 
-    args.classpath?.forEach { classpathRoot ->
+    args.classpath?.split(File.pathSeparator)?.forEach { classpathRoot ->
         add(
             CLIConfigurationKeys.CONTENT_ROOTS,
             if (isJava9Module) JvmModulePathRoot(File(classpathRoot)) else JvmClasspathRoot(File(classpathRoot))

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalJvmCompilerRunner.kt

@@ -550,7 +550,7 @@ var K2JVMCompilerArguments.destinationAsFile: File
     }
 
 var K2JVMCompilerArguments.classpathAsList: List<File>
-    get() = classpath.orEmpty().map(::File)
+    get() = classpath.orEmpty().split(File.pathSeparator).map(::File)
     set(value) {
-        classpath = value.map { it.path }.toTypedArray()
+        classpath = value.joinToString(separator = File.pathSeparator, transform = { it.path })
     }