[CLI] Restore K2JVMCompilerArguments.classpath and javaModulePath

to support IDEs < 2023.2

Reverts:
- 9dcd40d7b7
- fb66764c4d

KTIJ-25227

plugins/fir-plugin-prototype/fir-plugin-ic-test/tests/org/jetbrains/kotlin/incremental/AbstractIncrementalFirJvmCompilerRunnerTest.kt

@@ -9,7 +9,6 @@ import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
 import org.jetbrains.kotlin.incremental.testingUtils.BuildLogFinder
 import org.junit.jupiter.api.fail
 import java.io.File
-import java.io.FilenameFilter
 
 abstract class AbstractIncrementalFirJvmWithPluginCompilerRunnerTest : AbstractIncrementalFirJvmCompilerRunnerTest() {
     companion object {
@@ -35,7 +34,7 @@ abstract class AbstractIncrementalFirJvmWithPluginCompilerRunnerTest : AbstractI
             val annotationsJar = findJar(ANNOTATIONS_JAR_DIR, ANNOTATIONS_JAR_NAME, ":plugins:fir-plugin-prototype:plugin-annotations:jar")
             val pluginJar = findJar(PLUGIN_JAR_DIR, PLUGIN_JAR_NAME, ":plugins:fir-plugin-prototype:jar")
 
-            classpath = classpath?.plus(annotationsJar)
+            classpath += "${File.pathSeparator}$annotationsJar"
             pluginClasspaths = arrayOf(pluginJar)
         }
 

plugins/jvm-abi-gen/test/org/jetbrains/kotlin/jvm/abi/BaseJvmAbiTest.kt

@@ -74,7 +74,7 @@ abstract class BaseJvmAbiTest : TestCase() {
         val compiler = K2JVMCompiler()
         val args = compiler.createArguments().apply {
             freeArgs = listOf(compilation.srcDir.canonicalPath)
-            classpath = (abiDependencies + kotlinJvmStdlib).map { it.canonicalPath }.toTypedArray()
+            classpath = (abiDependencies + kotlinJvmStdlib).joinToString(File.pathSeparator) { it.canonicalPath }
             pluginClasspaths = arrayOf(abiPluginJar.canonicalPath)
             pluginOptions = listOfNotNull(
                 abiOption(JvmAbiCommandLineProcessor.OUTPUT_PATH_OPTION.optionName, compilation.abiDir.canonicalPath),