Pull Requests - Default title be based on branch name and not on last commit

When creating pull request the automatically generated name comes from the last commit on the branch. This is a bit confusing as a branch normally contains many commits and the latest commit message is not always informative in a way that it should be used to describe the PR. It would make more sense if the title would be generated based on the branch name, which in many cases is the same as the Jira summary field.