search: fix missing repository ID in streaming search commit events

Created by: coury-clark

Close #38676 (closed)

Our commit search events were not populating the repository ID field. This PR simply adds the repository ID from the commit to the event. I also spot checked some other event types and it appears they are all including the repository ID.

Test plan

Before:

event: matches
data: [{"type":"commit","label":"[jwasham/coding-interview-university](/github.com/jwasham/coding-interview-university) › [Antoine Cotten](/github.com/jwasham/coding-interview-university/-/commit/fe1ec60459cb8ef2d502af581b536e5bbcd4375b): [Update links to Topcoder community articles](/github.com/jwasham/coding-interview-university/-/commit/fe1ec60459cb8ef2d502af581b536e5bbcd4375b)","url":"/github.com/jwasham/coding-interview-university/-/commit/fe1ec60459cb8ef2d502af581b536e5bbcd4375b","detail":"[`fe1ec60` 5 days ago](/github.com/jwasham/coding-interview-university/-/commit/fe1ec60459cb8ef2d502af581b536e5bbcd4375b)","repositoryID":0,"repository":"github.com/jwasham/coding-interview-university","oid":"fe1ec60459cb8ef2d502af581b536e5bbcd4375b","message":"Update links to Topcoder community articles","authorName":"Antoine Cotten","authorDate":"2022-07-07T15:39:53Z","repoStars":221168,"repoLastFetched":"2022-07-11T07:07:14.462742Z","content":"```COMMIT_EDITMSG\nUpdate links to Topcoder community articles\n```","ranges":[]}]

After:

event: matches
data: [{"type":"commit","label":"[hashicorp/go-multierror](/github.com/hashicorp/go-multierror) › [Seth Vargo](/github.com/hashicorp/go-multierror/-/commit/0023bb0ab1225a10509dca08627b42bed25d74a5): [Check if multierror is nil in WrappedErrors](/github.com/hashicorp/go-multierror/-/commit/0023bb0ab1225a10509dca08627b42bed25d74a5)","url":"/github.com/hashicorp/go-multierror/-/commit/0023bb0ab1225a10509dca08627b42bed25d74a5","detail":"[`0023bb0` one year ago](/github.com/hashicorp/go-multierror/-/commit/0023bb0ab1225a10509dca08627b42bed25d74a5)","repositoryID":4,"repository":"github.com/hashicorp/go-multierror","oid":"0023bb0ab1225a10509dca08627b42bed25d74a5","message":"Check if multierror is nil in WrappedErrors\n\nThis adds a check similar to `ErrorsOrNil` that ensures the multierror pointer is not nil before returning the Errors field. I believe this is fully backwards-compatible, because the former behavior is a runtime panic.","authorName":"Seth Vargo","authorDate":"2021-03-11T20:06:12Z","repoStars":1631,"repoLastFetched":"2022-07-12T16:45:39.186154Z","content":"```COMMIT_EDITMSG\nCheck if multierror is nil in WrappedErrors\n\nThis adds a check similar to `ErrorsOrNil` that ensures the multierror pointer is not nil before returning the Errors field. I believe this is fully backwards-compatible, because the former behavior is a runtime panic.\n```","ranges":[]}]