4928: Make matches consider phrases as a single `Match` r=ManyTheFish a=flevi29
# Pull Request
## Related issue
Fixes#4732
## PR checklist
Please check if your PR fulfills the following requirements:
- [x] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
- [x] Have you read the contributing guidelines?
- [x] Have you made sure that the title is accurate and descriptive of the changes?
Thank you so much for contributing to Meilisearch!
Co-authored-by: F. Levi <55688616+flevi29@users.noreply.github.com>