Investigate Token Accessibility for t0 Address in claim_token API

[akaladarshi]

Summary

In the claim_token API, we have implemented wallet cap tests for all address formats — including t4, 0x, and t0 → 0x.
However, we’ve discovered that tokens sent to the t0 address are not accessible, resulting in token loss.

We need to investigate whether these tokens can be retrieved or not::

• If retrieval is possible, we can safely uncomment the related tests in test_claim_token_api_config.js.
• If retrieval is not possible, we must restrict the claim_token API and browser UI from supporting t0 and its corresponding 0x address mappings.

Completion Criteria

• Verify whether tokens sent to a t0 address can be accessed or recovered.
• If tokens are recoverable, uncomment the related tests in test_claim_token_api_config.js.
• If tokens are not recoverable, update the API and browser logic to block t0 and its corresponding 0x address usage.