Change default mr commit message to mr title and description
What does this MR do?
Change the default MR commit message to consistently be the MR title followed by the MR description.
The current behavior introduced by !55216 (merged) drop the description. This is inconsistent with the fact that the default MR description comes fromt the initial commit.
Droping the description in the default commit message strongly increase the risk to drop important information.
Screenshots
Edited by Yann Zimmermann