Display selected tts voice name (#2459)

Co-authored-by: luowei <glpat-EjySCyNjWiLqAED-YmwM>
Co-authored-by: crazywoola <427733928@qq.com>
Co-authored-by: crazywoola <100913391+crazywoola@users.noreply.github.com>

web/i18n/lang/app-debug.zh.ts

@@ -296,6 +296,7 @@ const translation = {
   },
   voice: {
     name: '音色',
+    defaultDisplay: '缺省音色',
     description: '文本转语音音色设置',
     settings: '设置',
     voiceSettings: {