rename LanguageModelChatResponse#stream to text (#212811)

https://github.com/microsoft/vscode/issues/206265

src/vs/workbench/api/common/extHostLanguageModels.ts

@@ -60,7 +60,7 @@ class LanguageModelResponse {
 		const that = this;
 		this.apiObject = {
 			// result: promise,
-			stream: that._defaultStream.asyncIterable,
+			text: that._defaultStream.asyncIterable,
 			// streams: AsyncIterable<string>[] // FUTURE responses per N
 		};
 	}

src/vscode-dts/vscode.proposed.languageModels.d.ts

@@ -100,8 +100,7 @@ declare module 'vscode' {
 		 * To cancel the stream, the consumer can {@link CancellationTokenSource.cancel cancel} the token that was used to make the request
 		 * or break from the for-loop.
 		 */
-		// TODO@API rename: text
-		stream: AsyncIterable<string>;
+		text: AsyncIterable<string>;
 	}
 
 	/**