`deno check` type checks gitignored files#29103

Files are type checked when running `deno check`, even though they are gitignored. In a standard sveltekit projects this leads to generated output files being type checked. ## Steps to reproduce 1. Run `git init` 2. Create `.gitignore` and add `ignore/` 3. Create `ignore` folder 4. Create `ignore/invalid.ts` with these contents: ```ts export const a: number = "a" ``` 5. Run `deno check` in the root folder. Version: Deno 2.2.12