Release 278.0.0 (#5126)

## Explanation
- fix(3742): improve user segmentation with BigInt-based random
generation ([#5110](#5110))
- fix(3742): change getMetaMetricsId to only sync func type
([#5108](#5108))

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## References

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## Changelog

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## Checklist

- [ ] I've updated the test suite for new or updated code as appropriate
- [x] I've updated documentation (JSDoc, Markdown, etc.) for new or
updated code as appropriate
- [x] I've highlighted breaking changes using the "BREAKING" category
above as appropriate
- [x] I've prepared draft pull requests for clients and consumer
packages to resolve any breaking changes

Author: DDDDDanica

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@metamask/core-monorepo",
-  "version": "277.0.0",
+  "version": "278.0.0",
   "private": true,
   "description": "Monorepo for packages shared between MetaMask clients",
   "repository": {

packages/remote-feature-flag-controller/CHANGELOG.md

@@ -7,8 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.3.0]
+
 ### Changed
 
+- Improve user segmentation with BigInt-based random generation ([#5110](https://github.com/MetaMask/core/pull/5110))
+- Change getMetaMetricsId to only sync func type ([#5108](https://github.com/MetaMask/core/pull/5108))
 - Bump `@metamask/base-controller` from `^7.0.0` to `^7.1.0` ([#5079](https://github.com/MetaMask/core/pull/5079))
 
 ## [1.2.0]
@@ -38,7 +42,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Initial release of the RemoteFeatureFlagController. ([#4931](https://github.com/MetaMask/core/pull/4931))
   - This controller manages the retrieval and caching of remote feature flags. It fetches feature flags from a remote API, caches them, and provides methods to access and manage these flags. The controller ensures that feature flags are refreshed based on a specified interval and handles cases where the controller is disabled or the network is unavailable.
 
-[Unreleased]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@1.2.0...HEAD
+[Unreleased]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@1.3.0...HEAD
+[1.3.0]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@1.2.0...@metamask/remote-feature-flag-controller@1.3.0
 [1.2.0]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@1.1.0...@metamask/remote-feature-flag-controller@1.2.0
 [1.1.0]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@1.0.0...@metamask/remote-feature-flag-controller@1.1.0
 [1.0.0]: https://github.com/MetaMask/core/releases/tag/@metamask/remote-feature-flag-controller@1.0.0

packages/remote-feature-flag-controller/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@metamask/remote-feature-flag-controller",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "description": "The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags",
   "keywords": [
     "MetaMask",