feat(picker.git): use default previewer args in git_show

[pedropombeiro]

Description

Currently, I'm able to perform a search on a YADM repo by passing the args { "--git-dir", "/Users/pedro/.local/share/yadm/repo.git", "--work-tree", "/Users/pedro" } to picker.previewers.git.args. Unfortunately, the git_show previewer is currently not using this configuration, so constantly fails to show the preview with an error message. This MR fixes the problem by leveraging the existing git local function.

Related Issue(s)

Screenshots

Previewer working inside a YADM repo.

[github-actions[bot]]

This PR is stale because it has been open 30 days with no activity.

[folke]

ty!