2 fixes in 97 (#44704)

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fix/what does it change/how was it tested (even manually, if necessary)?
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## Summary of the Pull Request
1. Should stop new executable when uninstall
2. Fix a workspaces editor deserialization issue


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## PR Checklist

- [ ] Closes: #xxx
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issues) -->
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
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and link it here: #xxx

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## Detailed Description of the Pull Request / Additional comments

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wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
It's a regression introduced when implementing the cmdpal workspaces
extension
Before fix:
<img width="235" height="135" alt="image"
src="https://github.com/user-attachments/assets/74bbf3ba-72cb-4a43-bba6-8eb96423f045"
/>

After fix:
<img width="341" height="294" alt="image"
src="https://github.com/user-attachments/assets/ce2236b8-c762-4bbf-85af-6a83a3987492"
/>

installer/PowerToysSetupCustomActionsVNext/CustomAction.cpp

@@ -1549,7 +1549,7 @@ UINT __stdcall TerminateProcessesCA(MSIHANDLE hInstall)
     }
     processes.resize(bytes / sizeof(processes[0]));
 
-    std::array<std::wstring_view, 42> processesToTerminate = {
+    std::array<std::wstring_view, 44> processesToTerminate = {
         L"PowerToys.PowerLauncher.exe",
         L"PowerToys.Settings.exe",
         L"PowerToys.AdvancedPaste.exe",
@@ -1584,12 +1584,14 @@ UINT __stdcall TerminateProcessesCA(MSIHANDLE hInstall)
         L"PowerToys.MouseWithoutBordersService.exe",
         L"PowerToys.CropAndLock.exe",
         L"PowerToys.EnvironmentVariables.exe",
+        L"PowerToys.QuickAccess.exe",
         L"PowerToys.WorkspacesSnapshotTool.exe",
         L"PowerToys.WorkspacesLauncher.exe",
         L"PowerToys.WorkspacesLauncherUI.exe",
         L"PowerToys.WorkspacesEditor.exe",
         L"PowerToys.WorkspacesWindowArranger.exe",
         L"Microsoft.CmdPal.UI.exe",
+        L"Microsoft.CmdPal.Ext.PowerToys.exe",
         L"PowerToys.ZoomIt.exe",
         L"PowerToys.exe",
     };