Add block & timestamp conditions to Signer (#4411)

* WIP

* WIP (with lint)

* Update ui/RadioButtons

* transaction.condition

* Date & Time selection in-place

* Swap to condition-only

* Fix tests, align naming

* Pick error properly from validation

* Update tests

* condition: time sent withough ms

* Format numbers as base-10

* override popup styles (zIndex)

* Pass condition to signer

* Update expectation (failing test typo)

* Adjust min/max height for expanded bar

* Fix address display

* Fix name display

* Number inputs for gas/gasPrice/blockNumber

* Default blockNumber to 1 (align with min setting)

* Update tests with min value

* Add Block Number

* Fix failing tests (after blockNumber intro)