Automatically show why a command failed

### Is your feature request related to a problem? Please describe.
I have pre commits. They fail sometimes. It's annoying to see the reasons of the failures.
"Git command failed" I have to esc, "@", go down, enter, read the message, (fix my commit outside lazygit), esc again (because the focus is on command log), c, enter

### Describe the solution you'd like
Instead of typing many keys I just want to see the error message instantly.

Additional optional idea: Maybe also a "r" to retry (so I modify the code in another window, and with "r" I stage again the files already staged (so it can incorporates the updated chunk) and I try to commit again.

### Describe alternatives you've considered
"@" go down enter is also a bit too many keys as such to just see an error IMO

lazygit 0.55.1