E2E Test Selection:
This PR makes purely additive changes to builds.yml, adding two new secret mappings:

1. MM_BRANCH_KEY_TEST - A Branch.io test key that's already referenced in existing workflows (push-eas-update.yml) and build scripts (scripts/build.sh). This is completing the configuration by adding the mapping to builds.yml.

2. QUICKNODE_HYPEREVM_URL - A new QuickNode URL for HyperEVM network support. This secret is not yet used anywhere in the codebase (no matches found), indicating this is preparatory configuration for future network support.

These changes:

• Are purely configuration/infrastructure changes (secret name mappings)
• Don't modify any application code or UI components
• Don't change any existing behavior (additive only)
• Don't affect test infrastructure or test files
• Don't impact any user-facing functionality

The builds.yml file is a configuration file that maps environment variable names to GitHub Secret names. Adding new mappings doesn't affect existing functionality - it just makes new secrets available for future use. No E2E tests are needed because there's no application behavior change to verify.

Performance Test Selection:
These changes are purely build configuration changes (adding secret mappings to builds.yml). They don't affect any application code, UI rendering, data loading, state management, or any runtime behavior. No performance impact is possible from these changes.