Patterns in `.git/info/exclude` aren't ignored

[thetarnav]

Changes to files in ignored by .git/info/exclude show up in the "Modified Files" section, in the sidebar.
Looke like .gitignore is getting used—changes in node_modules are not reported while in .gitignore.
But not .git/info/exclude.
Both of these files are excluding files from git and are respected by tools like ripgrep, so I think that opencode should do the same.

cat .git/info/exclude
opencode.json
.grepai
.vscode/settings.json
.env

OpenCode version

1.1.65

Steps to reproduce

1. echo "file_to_ignore" >> .git/info/exclude
2. Modify that file
3. Prompt opencode with something to trigger file change check

Operating System

Ubuntu 24.04.4 LTS

[github-actions]

This issue might be related to #4694, which reports that .gitignore patterns are not being respected by the glob tool. Both issues deal with git exclusion patterns not being properly honored across different parts of OpenCode.