Temporary filter language when search extensions

[l2eused]

Describe your suggested feature

Add option to temporary when searching source extensions such as extension list page, search page, migrate/merge page, etc.

Other details

The benefit of this feature. for example when want to migrate or search in raw or specific language. so it's easy to fast pre select sources.

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open or closed issue.
• I have written a short but informative title.
• If this is an issue with an official extension, I should be opening an issue in the extensions repository.
• I have updated the app to version 1.11.2.
• I will fill out all of the requested information in this form.