APP-2549: Field validation for WC QR code input

[RakeshUP]

Description

TODO: Crowdin key for error message pending from discovery. Will update that before merging this PR.

Task: APP-2549

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• I have selected the correct base branch.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• Any dependent changes have been merged and published in downstream modules.
• I ran all tests with success and extended them if necessary.
• I have updated the CHANGELOG.md file in the root folder.
• I have tested my code on the test network.

[cgero-eth]

Thanks @RakeshUP, let's wait for the new translation key to merge the PR 👌🏻