Crash inside `on-workspace-changed`

[nikitabobko]

Steps to reproduce:
Every once in a while, when I try to change workspaces with a keybind, Aerospace crashes and returns the following error. There doesn't seem to be anything specific that causes it, the only consistency I've noticed is that it happens on workspace change. My computer needs to reboot to get it back up and running again, because I get the rainbow wheel of death when my mouse hovers over the Aerospace section in the menu bar. It's happened maybe 10 times or so in the 6 or so months I've been using it, over several versions.

Expected result: workspace change
Actual result: runtime error crash

Additional info

##### AeroSpace Runtime Error #####

Please report to:
    https://github.com/nikitabobko/AeroSpace/discussions/categories/potential-bugs
    Please describe what you did to trigger this error

Message: The operation couldn’t be completed. Resource temporarily unavailable
Version: 0.19.2-Beta
Git hash: d246f250468fc9d427a2eb901d56794af7ac6609
refreshSessionEvent: hotkeyBinding
Date: 2025-07-24 17:36:55 +0000
Thread name: 
Is main thread: true
axTaskLocalAppThreadToken: nil
macOS version: Version 15.5 (Build 24F74)
Coordinate: AppBundle/focus.swift:187:46 onWorkspaceChanged(_:_:)
recursionDetectorDuringTermination: false
cli: false
Monitor count: 1
Displays have separate spaces: true

Stacktrace:
0   AeroSpace                           0x00000001047217dc $s6Common4dieT_4file4line6column8functionxSS_SSS2iSStlFs5NeverO_Tg5 + 2260
1   AeroSpace                           0x000000010474b810 $ss6ResultO6CommonE8getOrDie_4file4line6column8functionxSS_SSS2iSStF + 360
2   AeroSpace                           0x000000010458a6c0 $s9AppBundle18onWorkspaceChanged33_7642A5C3292B9DD5C5AAA7E6B763F792LLyySS_SStF + 1188
3   AeroSpace                           0x000000010458a164 $s9AppBundle28checkOnFocusChangedCallbacksyyF + 920
4   AeroSpace                           0x000000010452d884 $sSa9AppBundleAA7Command_pRszlE9runCmdSeqyAA0E6ResultVAA0E3EnvV_AA0E5StdinCtYaKFTY4_ + 172
5   AeroSpace                           0x000000010456fdf5 $s9AppBundle12activateModeyySSSgFyycfU0_yyYaKcfU_yyYaYbKScMYcXEfU_TQ1_ + 1
6   AeroSpace                           0x000000010452cb81 $s9AppBundle17runRefreshSession_33optimisticallyPreLayoutWorkspacesy6Common0dE5EventO_SbtFyyYaKcfU_TATQ0_ + 1
7   AeroSpace                           0x00000001045dbb91 $s9AppBundle10runSession__4bodyx6Common07RefreshD5EventO_AA03RunD5GuardVxyYaYbKScMYcXEtYaKlFxyYaKXEfU_xyYaKXEfU_yt_Tg5TQ6_ + 1
8   AeroSpace                           0x000000010452cb81 $s9AppBundle17runRefreshSession_33optimisticallyPreLayoutWorkspacesy6Common0dE5EventO_SbtFyyYaKcfU_TATQ0_ + 1
9   libswift_Concurrency.dylib          0x0000000286048461 $ss9TaskLocalC13withValueImpl_9operation9isolation4file4lineqd__xn_qd__yYaKXEScA_pSgYiSSSutYaKlFTQ1_ + 1
10  libswift_Concurrency.dylib          0x0000000286048109 $ss9TaskLocalC9withValue_9operation9isolation4file4lineqd__x_qd__yYaKXEScA_pSgYiSSSutYaKlFTQ1_ + 1
11  AeroSpace                           0x00000001045da6f9 $s9AppBundle10runSession__4bodyx6Common07RefreshD5EventO_AA03RunD5GuardVxyYaYbKScMYcXEtYaKlFxyYaKXEfU_yt_Tg5TQ1_ + 1
12  AeroSpace                           0x000000010452cb81 $s9AppBundle17runRefreshSession_33optimisticallyPreLayoutWorkspacesy6Common0dE5EventO_SbtFyyYaKcfU_TATQ0_ + 1
13  libswift_Concurrency.dylib          0x0000000286048461 $ss9TaskLocalC13withValueImpl_9operation9isolation4file4lineqd__xn_qd__yYaKXEScA_pSgYiSSSutYaKlFTQ1_ + 1
14  libswift_Concurrency.dylib          0x0000000286048109 $ss9TaskLocalC9withValue_9operation9isolation4file4lineqd__x_qd__yYaKXEScA_pSgYiSSSutYaKlFTQ1_ + 1
15  AeroSpace                           0x00000001045d9669 $s9AppBundle10runSession__4bodyx6Common07RefreshD5EventO_AA03RunD5GuardVxyYaYbKScMYcXEtYaKlFyt_Tg5TQ1_ + 1
16  AeroSpace                           0x000000010456f9c1 $s9AppBundle12activateModeyySSSgFyycfU0_yyYaKcfU_TQ1_ + 1
17  AeroSpace                           0x000000010452c5bd $s9AppBundle14GlobalObserverC7onNotif33_F1205CFDC13498282252A689C79131F6LLyy10Foundation12NotificationVFZyyYaYbScMYccfU_TATQ0_ + 1
18  libswift_Concurrency.dylib          0x000000028607c83d _ZL23completeTaskWithClosurePN5swift12AsyncContextEPNS_10SwiftErrorE + 1

Originally posted by @apeir-n in #1587