Release 912.0.0 (#8457)

## Explanation

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This release includes the following package:

- `@metamask/base-controller` 9.0.1 -> 9.1.0

This release is necessary because the `${Controller}:stateChange` event
is now deprecated in favor of `${Controller}:stateChanged`. More
importantly, `ControllerStateChangedEvent` is now available for use in
controller packages so that engineers can support the new event in their
messenger types.

## 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)
- [ ] 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]
> **Medium Risk**
> Primarily a wide dependency/version bump to
`@metamask/base-controller@9.1.0`, which can subtly affect many
controller packages at build/runtime if the new event/deprecation
behavior differs from prior versions.
> 
> **Overview**
> Bumps the monorepo release version to `912.0.0` and publishes
`@metamask/base-controller` `9.1.0` (including the new
`${ControllerName}:stateChanged` event and deprecating
`${ControllerName}:stateChange`, plus the `ControllerStateChangedEvent`
utility type).
> 
> Updates a large set of controller packages to depend on
`@metamask/base-controller@^9.1.0` and records the bump in each package
changelog, with corresponding `yarn.lock` updates.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
6a21d97. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: mcmire

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@metamask/core-monorepo",
-  "version": "911.0.0",
+  "version": "912.0.0",
   "private": true,
   "description": "Monorepo for packages shared between MetaMask clients",
   "repository": {

packages/account-tree-controller/CHANGELOG.md

@@ -54,7 +54,7 @@
   },
   "dependencies": {
     "@metamask/accounts-controller": "^37.2.0",
-    "@metamask/base-controller": "^9.0.1",
+    "@metamask/base-controller": "^9.1.0",
     "@metamask/keyring-api": "^21.6.0",
     "@metamask/keyring-controller": "^25.2.0",
     "@metamask/messenger": "^1.1.1",

packages/account-tree-controller/package.json

@@ -54,7 +54,7 @@
   },
   "dependencies": {
     "@ethereumjs/util": "^9.1.0",
-    "@metamask/base-controller": "^9.0.1",
+    "@metamask/base-controller": "^9.1.0",
     "@metamask/eth-snap-keyring": "^19.0.0",
     "@metamask/keyring-api": "^21.6.0",
     "@metamask/keyring-controller": "^25.2.0",

packages/accounts-controller/CHANGELOG.md

@@ -53,7 +53,7 @@
     "test:watch": "NODE_OPTIONS=--experimental-vm-modules jest --watch"
   },
   "dependencies": {
-    "@metamask/base-controller": "^9.0.1",
+    "@metamask/base-controller": "^9.1.0",
     "@metamask/controller-utils": "^11.20.0",
     "@metamask/messenger": "^1.1.1",
     "@metamask/utils": "^11.9.0"

packages/accounts-controller/package.json

@@ -53,7 +53,7 @@
     "test:watch": "NODE_OPTIONS=--experimental-vm-modules jest --watch"
   },
   "dependencies": {
-    "@metamask/base-controller": "^9.0.1",
+    "@metamask/base-controller": "^9.1.0",
     "@metamask/messenger": "^1.1.1",
     "@metamask/superstruct": "^3.1.0",
     "@metamask/utils": "^11.9.0"