<p>This is the last step for opening an HRMP channel between Pendulum and Darwinia. The purpose of this referendum is to accept the open channel request from Darwinia, following the successful passing of it.</p>

This is the last step for opening an HRMP channel between Pendulum and Darwinia. The purpose of this referendum is to accept the open channel request from Darwinia, following the successful passing of it.

Schedule a majority-carries referendum to be tabled next once it is legal to schedule
an external referendum.

The dispatch of this call must be `ExternalMajorityOrigin`.

- `proposal_hash`: The preimage hash of the proposal.

Unlike `external_propose`, blacklisting has no effect on this and it may replace a
pre-scheduled `external_propose` call.

Weight: `O(1)`

- **Problem Statement:** Finalizing the HRMP channel between Pendulum and Darwinia.
- **Significance:** Establishing an open channel request from Darwinia.
- **Proposed Solution:** Accepting the open channel request from Darwinia.
- **Expected Outcomes:** Successful opening of the HRMP channel, enhancing communication and collaboration between Pendulum and Darwinia.

#53 Accept HRMP channel request from Darwinia