Implementation of Loading Indicator for Phone Number Verification Page Transition

Describe the bug
Currently, there is a lack of a loading indicator when users enter their phone number for verification on the Multivendor Food Delivery site. This absence of visual feedback may lead to uncertainty about the status of the verification process, causing a potential user experience issue.

To Reproduce
Steps to reproduce the behavior:

Visit the Multivendor Food Delivery site.
Navigate to the phone number verification page.
Enter a phone number for verification.
Observe the absence of a loading indicator during the transition to the next page.
Expected behavior
A loading indicator should be implemented to provide users with visual feedback during the transition to the next page after entering their phone number for verification. This will help users understand that the system is processing their input.

Screenshots

loading.indicator.mp4
Desktop:

Browser: chrome

Start by reproducing the transition from the phone number verification page in Chrome and locate the React component handling phone number submission. Trace the transition to the next page and confirm that a loading indicator appears while processing; done means users receive visible feedback before navigation completes.

Written by the indexing model from the issue text.