This commit introduces a confirmation dialog before creating a new chat. The dialog displays the final chat title, which is now dynamically generated based on the user's input or the names of the selected participants.
Key changes:
- Added a confirmation dialog that appears when the user clicks the "create chat" button.
- Implemented logic to generate a provisional chat title from participants' names if no title is explicitly set.
- Refactored `CreateChatViewModel` by removing the interface and simplifying the implementation.
- Added new string resources for the confirmation dialog.
melod1n
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