Follow-up from "Resolve "Filter snippets by shard""
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The following discussion from !129218 should be addressed:
- [ ] @vyaklushin started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/129218#note_1516622176):
> **Suggestion (non-blocking)** We could move it in `Helpers::SnippetsHelpers`. So we won't need to create `ee/lib/ee/api/snippets.rb`, instead `find_snippets` override will be in `ee/lib/ee/api/helpers/snippets_helpers.rb`.
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