fix: use a unified file list sorting rule in both list and tree views

[nshcr]

The previous file list component used different filename sorting rules in the tree view and list view.
This wasn't a major issue in the earlier changed files view, but it has become much more noticeable with the recently introduced all-in-one continuous files diff preview, which follows the same sorting order as the list view.

This PR fixes the issue by making both views use a unified sorting rule.

[vercel]

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[Copilot]

Pull request overview

This PR unifies the file sorting rules between tree view and list view by extracting common sorting configuration into shared constants. Previously, the sortChildren function (used for tree view) and sortLikeFileTree function (used for list view) had slightly different sorting behaviors, which became noticeable with the new all-in-one continuous files diff preview feature.

Changes:

• Introduced shared sorting constants FILE_SORT_CONFIG and FILE_SORT_LOCALE to ensure consistent sorting behavior
• Updated both sortChildren and sortLikeFileTree functions to use the unified configuration
• Removed inline sorting configuration that was previously defined within sortLikeFileTree

[krlvi]

cc @mtsgrd

[mtsgrd]

Amazing. Thank you! 🎉

[mtsgrd]

Just one question, would FILE_SORT_LOCALE = undefined make it use the browsers locale? It might be better than explicitly setting en.

[mtsgrd]

@PavelLaptev fyi!

[PavelLaptev]

@nshcr awesome :-) Thanks!

[nshcr]

Just one question, would FILE_SORT_LOCALE = undefined make it use the browsers locale? It might be better than explicitly setting en.

@mtsgrd Thanks for merging it!

I kept the locale set to en to avoid changing the existing code logic.
Yes, I think removing FILE_SORT_LOCALE and letting this parameter be undefined would be better.

For reference, in this PR (#10517), I also used formatting rules that respect the user's locale, which might be helpful for the software's localization in the future.