Use git automatically if existing password-store uses it

[innir]

I have an existing ~/.password-store.
It has git enabled.
It is read and written to by pass(1).
It is read by applications using python3-pypass.

I installed qtpass, added a test password, and changed it two or three times.
I was very surprised to see that no git commit logs appeared.

It seems that by default, qtpass has

Configuration > Settings
[ ] Use git              (off by default)

Configuration > Programs
(X) Native git/gpg       (on by default)
( ) Use pass             (off by default)

If the user has no existing .password-store, this is a reasonable default.
However, if .password-store is ALREADY using git, qtpass SHOULD use git by default.

(Copied from a Debian bug report at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=995944)