Add -Xuse-fir-lt=false to some scripting tests

make them compatible with K2

plugins/scripting/scripting-compiler/tests/org/jetbrains/kotlin/scripting/compiler/plugin/ScriptingCompilerPluginTest.kt

@@ -201,7 +201,8 @@ class ScriptingCompilerPluginTest : TestCase() {
                 val cp = (runtimeClasspath + scriptingClasspath + defsOut).joinToString(File.pathSeparator)
                 val exitCode = K2JVMCompiler().exec(
                     System.err,
-                    "-cp", cp, *(scriptFiles.toTypedArray()), "-d", scriptsOut2.canonicalPath, "-Xallow-any-scripts-in-source-roots"
+                    "-cp", cp, *(scriptFiles.toTypedArray()), "-d", scriptsOut2.canonicalPath, "-Xallow-any-scripts-in-source-roots",
+                    "-Xuse-fir-lt=false"
                 )
 
                 Assert.assertEquals(ExitCode.OK, exitCode)

plugins/scripting/scripting-compiler/tests/org/jetbrains/kotlin/scripting/compiler/plugin/ScriptingWithCliCompilerTest.kt

@@ -251,6 +251,7 @@ class ScriptingWithCliCompilerTest {
                         arrayOf(
                             "-P", "plugin:kotlin.scripting:disable-script-definitions-autoloading=true",
                             "-cp", getMainKtsClassPath().joinToString(File.pathSeparator), "-d", tmpdir.path,
+                            "-Xuse-fir-lt=false",
                             "-Xallow-any-scripts-in-source-roots", "-verbose", fileArg
                         )
                     )