fix: Improve default values for zgsm configuration (#452)

Updates the webview message handler to use default values from the API configuration for `baseUrl` and `apiKey` if they are not provided in the message.

This change enhances flexibility and ensures that the application can function correctly even when specific values are not supplied.

Co-authored-by: xjm <[email protected]>

Author: xiaojingming

src/core/webview/webviewMessageHandler.ts

@@ -844,8 +844,8 @@ export const webviewMessageHandler = async (
 					key: "zgsm",
 					options: {
 						provider: "zgsm",
-						baseUrl: message?.values?.baseUrl,
-						apiKey: message?.values?.apiKey,
+						baseUrl: message?.values?.baseUrl || apiConfiguration.zgsmBaseUrl,
+						apiKey: message?.values?.apiKey || apiConfiguration.zgsmAccessToken,
 						openAiHeaders: message?.values?.openAiHeaders || {},
 					},
 				},