Enable auto-deposits for ERC-20 to L2 (deposits only) in the bridge UI

[VGau]

Description

Implement auto-deposits for ERC-20 tokens from L1 to L2 in the Bridge UI. This feature will allow users to deposit ERC-20 tokens to L2 automatically, streamlining the deposit process.

Motivation

Introducing auto-deposits will improve user experience when transferring ERC-20 tokens to L2

Tasks

• Implement the auto-deposit functionality for ERC-20 tokens from L1 to L2
• Ensure the feature is limited to deposits only (no withdrawals)
• Test for reliability and smooth user experience

Acceptance criteria

• Auto-deposits for ERC-20 tokens are successfully enabled
• The functionality is limited to deposits (no withdrawals)