max priority fee overridden in build_transaction_with_gas when gas base fee fails

[Lesigh-3100]

Bug Description

In txhelpers.py, in the function build_transaction_with_gas, the max priority fee is overridden in the first except. The original max priority set should be used.

Severity (High/Medium/Low)

Low

Steps to Reproduce

Run the bot & when it has an error with the base priority fee, the max priority is overridden.

Expected Behavior

The transaction should use the input max priority.

Actual Behavior

The transaction uses a max priority from a value in the error message.

Impact Analysis (to be filled by contributors)

• Automated Tests: A test would be good to cover this & our handling of error messages.
• Risks: Low risk - the bot still operates with this bug
• Performance: No
• Monitoring: No
• Logging: No
• Documentation: No