aw-watcher-window randomly crashes on swift strategy

- [x] I am on the [latest](https://github.com/ActivityWatch/activitywatch/releases/latest) ActivityWatch version.
- [x] I have searched the issues of this repo and believe that this is not a duplicate.

- **OS name and version**: macOS Sonoma 14.0
- **ActivityWatch version**: 0.12.2

## Describe the bug

aw-watcher-window seems to be crashing at random intervals with no logs when run normally with swift strategy.

I tried running the watcher via terminal and different strategy (both jxa and applescript) and both seemed to work with no issues. I was not able, however, to run the watcher with different strategy via the menu bar.

It can easily get annoying when you don't receive a GUI error message on crash and thus have to constantly check whether the watcher is actually still running.

## To Reproduce
Not sure how to consistently reproduce this issue. Sometimes the watcher can run for a few hours with no crashes just to crash 3 times in the next 10 minutes.

## Expected behavior

aw-watcher-window to work all the time.

## Documentation

Logs when the watcher is run via terminal with verbose setting enabled:
```
/Applications/ActivityWatch.app/Contents/MacOS/aw-watcher-window --strategy swift --verbose
2023-11-02 20:56:05 [DEBUG]: SingleInstance lockfile: /Users/jaqobb/Library/Caches/activitywatch/client_locks/aw-watcher-window-at-127.0.0.1-on-5600 (aw_client.singleinstance:22)
2023-11-02 20:56:05 [DEBUG]: queue path '/Users/jaqobb/Library/Application Support/activitywatch/aw-client/queued/aw-watcher-window.v1.persistqueue' (aw_client.client:407)
2023-11-02 20:56:05 [INFO ]: aw-watcher-window started (aw_watcher_window.main:62)
usage: aw-watcher-window [-h] [--host HOST] [--port PORT] [--testing]
[--exclude-title] [--verbose] [--poll-time POLL_TIME]
[--strategy {jxa,applescript,swift}]
aw-watcher-window: error: unrecognized arguments: -B -S -E -s -c from multiprocessing.resource_tracker import main;main(6)
usage: aw-watcher-window [-h] [--host HOST] [--port PORT] [--testing]
[--exclude-title] [--verbose] [--poll-time POLL_TIME]
[--strategy {jxa,applescript,swift}]
aw-watcher-window: error: unrecognized arguments: --multiprocessing-fork tracker_fd=7 pipe_handle=9
2023-11-02 20:56:06 [INFO ]: Using swift strategy, calling out to swift binary (aw_watcher_window.main:67)
2023-11-02 20:56:06 [DEBUG]: Starting new HTTP connection (1): 127.0.0.1:5600 (urllib3.connectionpool:228)
2023-11-02 20:56:06 [DEBUG]: http://127.0.0.1:5600 "POST /api/0/buckets/aw-watcher-window_jaqobb-laptop.local HTTP/1.1" 304 0 (urllib3.connectionpool:456)
2023-11-02 20:56:06 [INFO ]: Connection to aw-server established by aw-watcher-window (aw_client.client:436)
2023-11-02 20:56:06 [aw-watcher-window-macos] [INFO] Failed to create bucket
main/macos.swift:282: Fatal error: Unexpectedly found nil while unwrapping an Optional value
2023-11-02 20:57:36 [DEBUG]: queue path '/Users/jaqobb/Library/Application Support/activitywatch/aw-client/queued/aw-watcher-window.v1.persistqueue' (aw_client.client:407)
```

My guess is that the crash happens because of the error in the second to last line.

## Additional context