Do not resolve abuse_payload_metadata for SearchController#opensearch

What does this MR do and why?

This MR reproduces the following issue #629538 (closed) and fixes it by preventing resolving abuse_payload_metadata for SearchController#opensearch. See the issue description for details.

This issue occasionally occurs in CI, see https://gitlab.com/gitlab-org/quality/test-failure-issues/-/work_items/44567.

References

• SearchController#opensearch raises NoMethodErro... (#629538 - closed)
• https://gitlab.com/gitlab-org/quality/test-failure-issues/-/work_items/44567+

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