WA-VERIFY-113: Audit ActionView template handler compatibility for Rails 7.1

[kitcommerce]

Summary

Verify custom or implicit template handler assumptions remain valid under Rails 7.1.

Approach

• Search the repo and docs for the relevant compatibility surface.
• Verify current behavior or document the exact gap.
• If concrete breakage is found, open a focused follow-up issue instead of broad speculative changes.

Objective

Produce a crisp verification result for this compatibility area and keep downstream client impact neutral unless evidence shows otherwise.

Client Impact

None expected (verification/audit only).

Acceptance Criteria

• Search for template handler registrations and nonstandard view rendering hooks
• Confirm Rails 7.1 compatibility or document exact failure modes
• Add/update docs if a migration note is warranted
• Open targeted fix issues only if concrete issues are found

Verification Plan

Document the commands, files inspected, and outcome. If issues are found, link the follow-up issue(s).