Test supporting language specific settings for extensions

[sandy081]

Testing #26707

• anyOS: @dbaeumer
• anyOS: @mjbvz

Complexity: 4

---

Testing

Extensions can now contribute a setting that can be overridden by a language using the scope language-overridable.

Develop an extension that can contribute a language overridable setting.

• Use the configuration API to read and inspect such a setting given a resource or a language or both.

• Use the configuration API to update the setting at the location you prefer (under a language for eg.,).

• Listen to configuration change event that can be filtered to know if your setting has changed given a resource or a language or both.

• Check if the API documentation is helpful.