Remove exit option from Confirmed on Trezor pill modal

[MiroslavProchazka]

Follow up on #11771, please remove the cross on the pill modal upon the SOL send form, after user confirms the transaction on trezor and the modal from #11515 is waiting on SOL Tx confirmation.
This needs to be done because user might click on the cross and break the TX confirmation.

[Hannsek]

I don't think that is the ideal solution. If we remove the cross, user won't be able to exit the flow if he wants to do it.
Plus this would be another exception in our codebase which is 🫤.