Button Text in Language Tab

Description
The button text in the Language tab lacks consistent capitalization. Additionally, some of the languages are displayed in their native script/style while others are in English, leading to inconsistency in presentation.

Describe the solution you'd like

The first letter of every word in the button text should be capitalized (e.g., "Swedish" instead of "swedish") for consistency.
Language names should either be uniformly displayed in their native script/style or in English, with clear guidelines applied across the tab.

Start at the Language tab entry point and inspect how its button labels and language names are defined. Check the displayed labels in the running app, then apply one consistent capitalization and language-script convention across the tab. Done means every button follows the same capitalization and language names use the same presentation style.

Written by the indexing model from the issue text.