* Update release-channels.md and put Stable, Preview, Exp in correct order

Table should have the rows sorted by channel in the order Stable, Preview, Experimental, as this is the logical order that is also used for the navigation in the docs.

* Update support.md and include 1.7 SDK in table with supported Windows versions

As 1.7 SDK was released, it should be included in the table with supported Windows client/server versions

* This PR lists out an option for enterprise admins to block the Microsoft Store Web Installer on domain managed devices.

* update back navigation (#5333)

* add navigation articles for UWP

* remove UWP content

* add back nav guidelines moved from nav history doc

* update for WinUI 3

* fix yaml header

* fix links

* Update release date in documentation

* Kbridge/main/1.7 stable/rich edit box  mathmode (#5338)

* snapshot

* added math mode detail

* Move cross device people API topic in TOC

* Kbridge/main/multilingula app toolkit deprecation (#5339)

* added deprecation notices

* email link

* feedback revs

---------

Co-authored-by: Thomas Claudius Huber <[email protected]>
Co-authored-by: learn-build-service-prod[bot] <113403604+learn-build-service-prod[bot]@users.noreply.github.com>
Co-authored-by: Raunak Oberoi <[email protected]>
Co-authored-by: Jim Walker <[email protected]>
Co-authored-by: Learn Build Service GitHub App <Learn Build Service [email protected]>
Co-authored-by: John Kennedy <[email protected]>
Co-authored-by: Alvin Ashcraft <[email protected]>
Co-authored-by: Alvin Ashcraft <[email protected]>

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request

Add backup settings for the Hosts File Editor to allow users to
customize the existing hardcoded logic.

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [x] **Closes:** #37666
- [ ] **Communication:** I've discussed this with core contributors
already. If work hasn't been agreed, this work might be rejected
- [x] **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)
- [x] **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:
MicrosoftDocs/windows-dev-docs#5342

<!-- Provide a more detailed description of the PR, other things fixed
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<img width="707" alt="image"
src="https://github.com/user-attachments/assets/e114431e-60e0-4b8c-bba7-df23f7af0182"
/>

<img width="707" alt="image"
src="https://github.com/user-attachments/assets/a02b591e-eb46-4964-bee7-548ec175b3aa"
/>

<img width="707" alt="image"
src="https://github.com/user-attachments/assets/6eb0ff21-74fa-4229-8832-df2df877b5cd"
/>

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

- Backup on: verified that backup isn't executed
- Backups off: Verified that only one backup is executed
- Verified that backup is located in the expected path
- Auto delete is set to "never": verified that no backups are deleted
- Auto delete is set to "based on count": verified that backups are
deleted according to count value
- Auto delete is set to "based on age and count": verified that backups
are deleted according to days and count values
- Verified that files without the backup pattern aren't deleted
- There is also adequate test coverage for these scenarios 🚀

---------

Co-authored-by: Gordon Lam (SH) <[email protected]>