Describe the bug
While viewing a stash, discarding a file discards a file the latest commit.

To Reproduce
Steps to reproduce the behavior:

1. <C-M> | <Enter> on a stash item
2. Discard d, confirm
3. Discard happens in commit, which is unrelated to where discard was pressed.

Expected behavior
Either disallow discarding in stash or discard file in stash, not in commit.

Version info:
commit=v0.38.2, build date=2023-05-03T15:21:01Z, build source=binaryRelease, version=0.38.2, os=linux, arch=amd64, git version=2.40.1