build(packages): pin SixLabors.ImageSharp version to restore functionality and patches requirements

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fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request

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## PR Checklist
This PR improves FancyZones CLI usability with three enhancements:

1. **PowerShell GUID compatibility**: Users can now pass GUIDs without
braces (e.g., `0CEBCBA9-9C32-4395-B93E-DC77485AD6D0`), avoiding
PowerShell's script block interpretation issue
2. **Subcommand help**: Added `--help` support for individual commands
(e.g., `FancyZonesCLI set-layout --help`)
3. **Friendly error messages**: When PowerShell incorrectly interprets
`{GUID}` as a script block, displays a helpful message instead of
cryptic errors

<img width="1313" height="476" alt="image"
src="https://github.com/user-attachments/assets/65eb403a-05ec-412b-852d-b20386792b34"
/>
<img width="1311" height="598" alt="image"
src="https://github.com/user-attachments/assets/a07a304e-a353-43c5-9e88-84840ffd86f2"
/>

<img width="1309" height="380" alt="image"
src="https://github.com/user-attachments/assets/3c1a071d-325d-486a-bfa7-f4b974523400"
/>

- [x] Closes: #44633 #44675
<!-- - [ ] Closes: #yyy (add separate lines for additional resolved
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
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

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or any additional comments/features here -->
## 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

Directory.Packages.props

@@ -13,6 +13,8 @@
     <PackageVersion Include="Microsoft.Bot.AdaptiveExpressions.Core" Version="4.23.0" />
     <PackageVersion Include="Appium.WebDriver" Version="4.4.5" />
     <PackageVersion Include="CoenM.ImageSharp.ImageHash" Version="1.3.6" />
+    <!-- Pin the SixLabors.ImageSharp version (a transitive dependency of CoenM.ImageSharp.ImageHash) to restore functionality and apply patches. -->
+    <PackageVersion Include="SixLabors.ImageSharp" Version="2.1.12" />
     <PackageVersion Include="CommunityToolkit.Common" Version="8.4.0" />
     <PackageVersion Include="CommunityToolkit.Mvvm" Version="8.4.0" />
     <PackageVersion Include="CommunityToolkit.WinUI.Animations" Version="8.2.250402" />