Release/804.0.0 (#7891)

## Explanation

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Major release of @metamask/notification-services-controller to v22.0.0.

## References

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## Checklist

- [ ] I've updated the test suite for new or updated code as appropriate
- [ ] I've updated documentation (JSDoc, Markdown, etc.) for new or
updated code as appropriate
- [ ] I've communicated my changes to consumers by [updating changelogs
for packages I've
changed](https://github.com/MetaMask/core/tree/main/docs/processes/updating-changelogs.md)
- [x] I've introduced [breaking
changes](https://github.com/MetaMask/core/tree/main/docs/processes/breaking-changes.md)
in this PR and have prepared draft pull requests for clients and
consumer packages to resolve them

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Version/changelog-only changes with no functional code modifications;
risk is limited to release metadata correctness.
> 
> **Overview**
> Bumps the monorepo release version to `804.0.0` and publishes
`@metamask/notification-services-controller` as `22.0.0`.
> 
> Updates the controller’s changelog for `22.0.0` and adjusts compare
links to reflect the new release tag.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
24796b3. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: baptiste-marchand

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@metamask/core-monorepo",
-  "version": "803.0.0",
+  "version": "804.0.0",
   "private": true,
   "description": "Monorepo for packages shared between MetaMask clients",
   "repository": {

packages/notification-services-controller/CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [22.0.0]
+
 ### Changed
 
 - Upgrade `@metamask/utils` from `^11.8.1` to `^11.9.0` ([#7511](https://github.com/MetaMask/core/pull/7511))
@@ -655,7 +657,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release
 
-[Unreleased]: https://github.com/MetaMask/core/compare/@metamask/notification-services-controller@21.0.0...HEAD
+[Unreleased]: https://github.com/MetaMask/core/compare/@metamask/notification-services-controller@22.0.0...HEAD
+[22.0.0]: https://github.com/MetaMask/core/compare/@metamask/notification-services-controller@21.0.0...@metamask/notification-services-controller@22.0.0
 [21.0.0]: https://github.com/MetaMask/core/compare/@metamask/notification-services-controller@20.0.0...@metamask/notification-services-controller@21.0.0
 [20.0.0]: https://github.com/MetaMask/core/compare/@metamask/notification-services-controller@19.0.0...@metamask/notification-services-controller@20.0.0
 [19.0.0]: https://github.com/MetaMask/core/compare/@metamask/notification-services-controller@18.3.1...@metamask/notification-services-controller@19.0.0

packages/notification-services-controller/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@metamask/notification-services-controller",
-  "version": "21.0.0",
+  "version": "22.0.0",
   "description": "Manages New MetaMask decentralized Notification system",
   "keywords": [
     "MetaMask",