Large files freeze lazygit

[chalmagean]

Is your feature request related to a problem? Please describe.
I was doing a postresql dump, and the file is pretty large (about 4,5gb), so when I opened up lazygit and hovered over the dump file, everything froze for a few minutes.

Describe the solution you'd like
Maybe a message that says something like "this is a huge file, press to preview it".

Thank you.