Add Malformed Transactions

[seaona]

Description

Similarly to the Add Malformed Signatures PR, in this PR we are adding Malformed Transactions. It consists on the following:

• Invalid Value Type (String): transaction with a string passed as the Value param
• Invalid Transaction Type (Not Supported): transaction with a non supported tx type. This uncovers the following bug
  • [Bug]: Transaction with invalid/unsupported type cannot be cleared from the wallet and remains as Unapproved
• Send With Odd Hex Data: this uncovered the following issue, now resolved (both Extension and Mobile)
  • [Extension] Confirmations - PPOM - Bypassing the Malicious Warning and turning into Request May not be Safe
• Approve ERC20 With Odd Hex Data: this uncovered the following issue, now resolved (both Extension and Mobile)
  • [Extension] Confirmations - Bypassing ERC20 Approve screen by removing the leading zero from the Approve signature 0x095ea7b3
• Invalid Recipient (String): passing a string instead of a hex for the address value
• Invalid Gas Limit (String): passing a string instead of a valid gas limit value
• Invalid Max Fee Per Gas (String): this uncovered the following bug
  • [Bug]: MM breaks with the error String provided to stringToBigNumber is not a hexadecimal or decimal string

Screenshots

malformed-tx.mp4

Manual QA

1. Try Invalid Value Type --> you will see the error correctly displayed in the dapp
2. Try Invalid Transaction Type --> warning: if you accept, you will encounter the issue mentioned in the description: having an unapproved tx on state, and unable to clean it
3. Try Send with Odd Hex Data --> you will see data is still not normalized, since the issue is still not fixed in prod
4. Try Approve with Odd Hex Data --> you will see that hex data is still not normalized and the fallback contract interaction screen appears (no Approve screen), since the issue is still not fixed in prod
5. Try Invalid Recipient --> you will see the error correctly displayed in the dapp
6. Try Invalid Gas Limit --> you will see a predefault gas limit set and MM does not break
7. Try Invalid Max Gee per Gas --> you will see that MM breaks with the error mentioned in the description

[digiwand]

awesome! added a minor suggestion to move github comments to code itself

[seaona]

thank you for the reviews ❤️ @digiwand I've added the comments in the code as you suggested 🙏