[Bug]: `.gitignore` in nested folder is ignored for local repos

[peterschmidt85]

Steps to reproduce

1. Create/open a folder that is not a remote Git repo
2. Do dstack init
3. Create a nested folder folder
4. Create a folder/hello.txt
5. Create the following folder/.gitignore

hello.txt

7. Create the following .dstack.yml

type: task

commands:
  - find .

8. Do dstack apply

Actual behaviour

The folder/hello.txt is listed in the output

Expected behaviour

The folder/hello.txt shouldn't be listed

dstack version

0.19.2

Server logs

Additional information

This issue is a blocker when a nested folder contains large files, leading to a "2MB exceed” error.