fix(pos): numpad error when changing language

[rpineda]

The pull request fixes a small bug that happens on the POS page when the language is changed. Everything works perfect in English, but for example in Spanish. When clicking on the Quantity buttons, the event should change the focus to the input tag qty, but that does not happen.

For this reason I made a small modification in the files:

• erpnext / selling / page / point_of_sale / pos_item_cart.js
• erpnext / selling / page / point_of_sale / pos_number_pad.js

Modification in the file: erpnext / selling / page / point_of_sale / pos_payment.js fixes the error when choosing a customer

Please provide enough information so that others can review your pull request:

Explain the details for making this change. What existing problem does the pull request solve?

Screenshots/GIFs

[stale]

This pull request has been automatically marked as inactive because it has not had recent activity. It will be closed within 3 days if no further activity occurs, but it only takes a comment to keep a contribution alive :) Also, even if it is closed, you can always reopen the PR when you're ready. Thank you for contributing.

[nextchamp-saqib]

Keep Alive

[rpineda]

Keep Alive x2

[stale]

This pull request has been automatically marked as inactive because it has not had recent activity. It will be closed within 3 days if no further activity occurs, but it only takes a comment to keep a contribution alive :) Also, even if it is closed, you can always reopen the PR when you're ready. Thank you for contributing.

[zulnabil]

this bug still exist in Indonesia language

[nextchamp-saqib]

Fixed with #30808

[tbe]

This issue still exists for me with erpnext v13.40.2 docker images.