chore(release): release-changelog/7.73.2 (#29306)

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## **Description**

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This PR updates the change log for 7.73.2


## **Changelog**

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CHANGELOG entry: null

## **Related issues**

Fixes:

## **Manual testing steps**

```gherkin
Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
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- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask Mobile
Coding
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#### Performance checks (if applicable)

- [ ] I've tested on Android
  - Ideally on a mid-range device; emulator is acceptable
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to import wallets with many accounts and tokens
- [ ] I've instrumented key operations with Sentry traces for production
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[`addToken`](/app/components/Views/AddAsset/components/AddCustomToken/AddCustomToken.tsx#L274)
for an example

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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Low risk documentation-only change: updates `CHANGELOG.md` to include
the `7.73.2` release notes and adjusts compare links; no runtime code is
modified.
> 
> **Overview**
> Adds a new `7.73.2` section to `CHANGELOG.md` documenting Polymarket
CLOB v2 support and fixes for HyperLiquid Perps balance display/refresh
issues.
> 
> Updates the changelog reference links so `[Unreleased]` compares from
`v7.73.2` and adds a `[7.73.2]` compare link.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
d55c543. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: chloeYue

CHANGELOG.md

@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [7.73.2]
+
+### Added
+
+- Added Polymarket CLOB v2 support (#29076)
+
+### Fixed
+
+- Fixed Perps $0 balance display for accounts funded via HyperLiquid spot USDC (#29110)
+- Fixed Perps balance not refreshing after trades, funding, or transfers for HyperLiquid users, and corrected total balance inflation on Unified-mode accounts (#29226)
+
 ## [7.73.1]
 
 ### Fixed
@@ -11222,7 +11233,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#957](https://github.com/MetaMask/metamask-mobile/pull/957): fix timeouts (#957)
 - [#954](https://github.com/MetaMask/metamask-mobile/pull/954): Bugfix: onboarding navigation (#954)
 
-[Unreleased]: https://github.com/MetaMask/metamask-mobile/compare/v7.73.1...HEAD
+[Unreleased]: https://github.com/MetaMask/metamask-mobile/compare/v7.73.2...HEAD
+[7.73.2]: https://github.com/MetaMask/metamask-mobile/compare/v7.73.1...v7.73.2
 [7.73.1]: https://github.com/MetaMask/metamask-mobile/compare/v7.73.0...v7.73.1
 [7.73.0]: https://github.com/MetaMask/metamask-mobile/compare/v7.72.1...v7.73.0
 [7.72.1]: https://github.com/MetaMask/metamask-mobile/compare/v7.72.0...v7.72.1