Feature request: link on MR page "show other open MRs to the same target branch"

Proposal

It would be helpful to have a link on MR page which would link to the others (open) MRs to the same branch. For example:

• on MR which is into "master" branch, the link would redirect to open MRs ito "master" branach
• on MR into "pre-version-xxx", the link would redirect to open MRs into "pre-version-xxx" branach
• etc

At this point I need to copy target branch from MR (e.g "pre-version-xxx"), click on "Merge Reqest" in the left menu, and then use search with tag "target-branch: pre-version-xxx".