#9164: feat(apply_patch): enable for github-copilot provider

…docs <!-- greptile_comment --> <h2>Greptile Overview</h2> <h3>Greptile Summary</h3> This PR extends the existing `apply_patch` gating logic so the GitHub Copilot provider is treated like OpenAI for the purpose of enabling `tools.exec.applyPatch` when permitted by tool policy. It also updates the config schema help text to document Copilot support and an example allowlist entry format. <h3>Confidence Score: 5/5</h3> - This PR is safe to merge with minimal risk. - Change is narrowly scoped to provider name normalization used for apply_patch gating and corresponding help text updates; no behavior change outside that flag path was found. - No files require special attention <!-- greptile_other_comments_section --> _{(4/5) You can add custom instructions or style guidelines for the agent [here](https://app.greptile.com/review/github)!} **Context used:** - Context from `dashboard` - CLAUDE.md ([source](https://app.greptile.com/review/custom-context?memory=fd949e91-5c3a-4ab5-90a1-cbe184fd6ce8)) - Context from `dashboard` - AGENTS.md ([source](https://app.greptile.com/review/custom-context?memory=0d0c8278-ef8e-4d6c-ab21-f5527e322f13)) <!-- /greptile_comment -->