fix: hide rpc url selector for networks with one rpc

[salimtb]

Description

This pull request aims to enhance the user experience by conditionally hiding the RPC selector URL when the network has only one available option. By removing unnecessary UI elements in such cases, this update ensures a cleaner and more intuitive interface.

Related issues

Fixes:

Manual testing steps

1. Go to Network selector
2. Check for network with single RPC
3. You should not see the rpc selector

Screenshots/Recordings

Before

Screen.Recording.2024-11-17.at.09.15.38.mov

After

Screen.Recording.2024-11-17.at.09.06.19.mov

Pre-merge author checklist

• I’ve followed MetaMask Contributor Docs and MetaMask Mobile Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[github-actions]

Bitrise

✅✅✅ pr_smoke_e2e_pipeline passed on Bitrise! ✅✅✅

Commit hash: 16dd0db
Build link: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/15dcf7c3-0416-42ad-a2ae-e6338541457f

Note

• You can kick off another pr_smoke_e2e_pipeline on Bitrise by removing and re-applying the Run Smoke E2E label on the pull request

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[salimtb]

non regression tests: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/b6d06885-b818-45c6-bf91-e270866dbf3e?tab=workflows