fix: fix block explorer return button

[salimtb]

Description

After trying to add a block explorer the Add Custom Network modal pops-up. I am adding block explorer by using device keypad enter button because the Add Block Explorer URL button is not reachable, keypad in the way. May be because of the keypad that is causing this.

Have not been able to successfully add a block explorer.

Related issues

Fixes: #11992

Manual testing steps

1. Go to add network form
2. fill the form
3. when you fill the block explorer form click on return keyboard button

Screenshots/Recordings

Before

After

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.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarCloud

[github-actions]

Bitrise

✅✅✅ pr_smoke_e2e_pipeline passed on Bitrise! ✅✅✅

Commit hash: ce1c8ea
Build link: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/35833ab4-2c26-4ed4-98d9-6af4fe1c047f

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

[andreahaku]

LGTM