Accept an incoming HRMP channel request from HydraDX (2034).

 Reject a proposed spend. The original deposit will be slashed.

 # <weight>
 - O(1).
 - Limited storage reads.
 - One DB clear.
 # </weight>

- **Problem Statement:** Accept an incoming HRMP channel request from HydraDX (2034).
- **Significance:** Ensuring efficient communication and collaboration with HydraDX.
- **Proposed Solution:** Accept the HRMP channel request from HydraDX.
- **Expected Outcomes:** Improved communication and collaboration with HydraDX.

#25 Accept HRMP channel from HydraDX