enhancement(enriching): add optional wildcard search parameter

[nzxwang]

Summary

This PR resolves #22920 by enhancing the enrichment functions with support for optional matching against a wildcard as a fallback. It's implementation is a fallback to finding a match against the wildcard in the indexed function to pass the wildcard-matched rows to the follow-up sequential scan which was also updated to include a fallback to matching against the wildcard in row_equals. In the latter, I've refactored the comparison logic to compare_values as I believe its more readable (but I'm happy to be wrong about this). I also tried to update the documentation but I'm happy to correct this as well.

As a side note, I did consider implementing some delimiter parameter which would allow the user to specify delimiter="|" and pass multiple match values per column in the condition field directly but the implementation would be more complicated than simply specifying a wildcard for all fields. Full regex support would be even better but its implementation would be even more complicated.

Change Type

• Bug fix
• New feature
• Non-functional (chore, refactoring, docs)
• Performance

Is this a breaking change?

• Yes
• No

How did you test this PR?

cargo fmt --all
cargo clippy --workspace --all-targets -- -D warnings
RUST_BACKTRACE=1 cargo vdev test enrichment_tables::file::tests:: 
./scripts/check_changelog_fragments.sh

Does this PR include user facing changes?

• Yes. Please add a changelog fragment based on our guidelines.
• No. A maintainer will apply the "no-changelog" label to this PR.