Fix project panel losing focus after file creation attempt (#20273)

Closes https://github.com/zed-industries/zed/issues/19771

### Before

When pressing <kbd>esc</kbd> after attempting to create a file, the
focus is lost and you don't know where it went.


https://github.com/user-attachments/assets/2ccd82b7-b7d2-49e4-b1c7-1867331ab9dc

### After

Now, after pressing <kbd>esc</kbd>, the focus returns to where it was
before trying to create a new file.


https://github.com/user-attachments/assets/a8eb1cf1-dfef-42eb-9f3d-2ab6200056c4

Release Notes:

- Fix project panel losing focus after file creation attempt
([#19771](https://github.com/zed-industries/zed/issues/19771))

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Co-authored-by: Kirill Bulatov <mail4score@gmail.com>