fix: resolve symlinks for startup and git

[smitropoulos]

• PR Description
  Resolve symlinks when starting lazygit in a symlinked dir under git
• Please check if the PR fulfills these requirements

• Cheatsheets are up-to-date (run go generate ./...)
• Code has been formatted (see here)
• Tests have been added/updated (see here for the integration test guide)
• Text is internationalised (see here)
• Docs (specifically docs/Config.md) have been updated if necessary
• You've read through your own file changes for silly mistakes etc

[jesseduffield]

Thanks for making this. I'm pretty confident this is PR is no longer required now that we've merged #3183. Could you confirm whether the original issue you had is still present on master?

[jesseduffield]

Closing as stale