Restore logic of StandardScriptDefinition handling, fixes codegen tests

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/K2JVMCompiler.kt

@@ -115,6 +115,8 @@ class K2JVMCompiler : CLICompiler<K2JVMCompilerArguments>() {
             return ExitCode.OK
         }
 
+        configuration.add(JVMConfigurationKeys.SCRIPT_DEFINITIONS, StandardScriptDefinition)
+
         if (arguments.skipMetadataVersionCheck) {
             JvmMetadataVersion.skipCheck = true
         }

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/KotlinCoreEnvironment.kt

@@ -143,10 +143,10 @@ class KotlinCoreEnvironment private constructor(
                                 if (configuration.get(JVMConfigurationKeys.LOAD_SCRIPT_CONFIGS) ?: false)
                                     loadScriptConfigsFromProjectRoot(File(project.basePath ?: ".")).let { configs ->
                                         val kotlinEnvVars = generateKotlinScriptClasspathEnvVars(project)
-                                        configs.map { KotlinConfigurableScriptDefinition(it, kotlinEnvVars) } + StandardScriptDefinition
+                                        configs.map { KotlinConfigurableScriptDefinition(it, kotlinEnvVars) }
                                     }
                                 else null
-                                ?: listOf(StandardScriptDefinition)
+                                ?: emptyList()
                             })
 
             KotlinScriptExtraImportsProvider.getInstance(project)?.run {