Enable defaultMode experiment for free users (microsoft#258273)

Author: roblourens

src/vs/workbench/contrib/chat/browser/chatInputPart.ts

@@ -718,13 +718,15 @@ export class ChatInputPart extends Disposable implements IHistoryNavigationWidge
 		}
 
 		// TODO@roblourens This is for an experiment which will be obsolete in a month or two and can then be removed.
-		if (modelIsEmpty && this.entitlementService.entitlement !== ChatEntitlement.Free) {
+		if (modelIsEmpty) {
 			const storageKey = this.getDefaultModeExperimentStorageKey();
 			const hasSetDefaultMode = this.storageService.getBoolean(storageKey, StorageScope.WORKSPACE, false);
 			if (!hasSetDefaultMode) {
+				const defaultModeKey = this.entitlementService.entitlement === ChatEntitlement.Free ? 'chat.defaultModeFree' : 'chat.defaultMode';
+				const defaultLanguageModelKey = this.entitlementService.entitlement === ChatEntitlement.Free ? 'chat.defaultLanguageModelFree' : 'chat.defaultLanguageModel';
 				Promise.all([
-					this.experimentService.getTreatment('chat.defaultMode'),
-					this.experimentService.getTreatment('chat.defaultLanguageModel'),
+					this.experimentService.getTreatment(defaultModeKey),
+					this.experimentService.getTreatment(defaultLanguageModelKey),
 				]).then(([defaultModeTreatment, defaultLanguageModelTreatment]) => {
 					if (typeof defaultModeTreatment === 'string') {
 						this.storageService.store(storageKey, true, StorageScope.WORKSPACE, StorageTarget.MACHINE);