Reopening @yara-blue's change to try to fix CI:

> This disables the GPUI profiler by default, it is opt in using the
feature gpui/profiler. We had one report of a possible deadlock, until
that is resolved the profiler will be disabled. By doing this with a
feature we can keep the code and fix forward on nightly post release. It
will also be useful to other GPUI users who are not using the profiler
infrastructure and now no longer need to pay the overhead (0.1%).

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A

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Co-authored-by: Yara <git@yara.blue>