Add warning to make_block_pulse() if rf.delay is changed to rf.dead_time

[h3lg3]

This PR adds the same warning about the change of rf.delay to the method make_block_pulse as it is implemented in make_sinc_pulse.

if rf.dead_time > rf.delay:
    warn(
        f'Specified RF delay {rf.delay*1e6:.2f} us is less than the dead time {rf.dead_time*1e6:.0f} us. Delay was increased to the dead time.',
        stacklevel=2,
    )
    rf.delay = rf.dead_time