[llvm] [workflows] Create a more descriptive title and body when creating a … (PR #80396)

[Tom Stellard via llvm-commits]

tstellar wrote:

I'm open to suggestions to what the formatting should be for the message.  Here is an example of what it looks like with this current patch: https://github.com/tstellar/llvm-project/pull/932/

https://github.com/llvm/llvm-project/pull/80396