Fix issue #30221. [Fix] Adjust gas calculations for L2-to-L2 bridge transactions (Arbitrum to Optimism)

[VolodymyrBg]

Description

This PR fixes an issue where bridge transactions of unapproved USDC from Arbitrum to ETH on Optimism were failing due to insufficient gas fee calculations. The problem occurred during the approval transaction phase, regardless of STX (Secure Transaction) settings.

1. Reason for change: Bridge transactions between L2 networks (specifically Arbitrum to Optimism) were failing due to underestimated gas fees during the token approval phase.

2. Improvement/solution:

   • Added a 20% buffer to gas calculations specifically for L2-to-L2 bridge transactions
   • Enhanced the transaction controller to properly handle cross-chain message passing costs
   • Updated gas estimation logic to account for execution costs on both L2 chains

Related issues

Fixes: #30221

Manual testing steps

1. Ensure you have unapproved USDC on Arbitrum network
2. Navigate to the bridge interface in MetaMask
3. Attempt to bridge USDC from Arbitrum to ETH on Optimism
4. Verify that the approval transaction succeeds with proper gas estimation
5. Complete the bridge transaction and verify it processes successfully
6. Test with both STX enabled and disabled to ensure consistent behavior

Screenshots/Recordings

Before

Transaction would fail with "extra fees" error during approval phase

After

Transaction succeeds with proper gas estimation including L2 bridge overhead

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards
• I've completed the PR template to the best of my ability
• I've included tests if applicable
• I've documented my code using JSDoc format if applicable
• I've applied the right labels on the PR

Pre-merge reviewer checklist

• I've manually tested the PR
• I confirm that this PR addresses all acceptance criteria described in the ticket

[github-actions]

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[VolodymyrBg]

I have read the CLA Document and I hereby sign the CLA