Add quotes to hash file autocomplete

[merelymyself]

Description

Fixes #6741. Autocompleting a dir/file named something like foo#bar will now complete to `foo#bar`

User-Facing Changes

Files and directories with hashes will now autocomplete with quotation marks.

Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

• cargo fmt --all -- --check to check standard code formatting (cargo fmt --all applies these changes)
• cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect to check that you're using the standard code style
• cargo test --workspace to check that all tests pass

After Submitting

If your PR had any user-facing changes, update the documentation after the PR is merged, if necessary. This will help us keep the docs up to date.

[sholderbach]

Happy you are back! Thanks for the fix. Would you mind adding a test case?

[sholderbach]

Thanks looks good!

[rgwood]

This is a really nice improvement, thanks.