Impossible to set handler the 2nd time (until clear out local storage)

[elena-zh]

Related to #2938

It is an edge case. I hope that no one will face this ever.

1. Open a Safe account that has not setup a handler
2. Place a TWAP order and Set fallback handler in TWAP
3. Then follow instructions in chore(twap): testing tool to reset fallback handler #2658 to reset the handler
4. Return back to the app and place one more TWAP order

AR: there is no warning to set the handler the 2nd time. TWAP order is placed, but parts are not created there.
If clear out the local storage, the app will show the warning to set up the handler

ER: the warning to set up the handler for the 2nd time should appear

Assumptions: might be the case when the 1st transaction is cancelled/failed in the Safe.

[elena-zh]

Closing: no users' complaints on it.