Support decision point display value search in experiment filters

[zackcl]

Resolves #3224

Changes:

• Allow Experiment list Decision Point searches to match the displayed site (target) format
• Preserve existing site-only and target-only matching
• Include the same decision point display matching in global search

[Copilot]

Pull request overview

This PR resolves #3224 by extending experiment list search filtering so Decision Point queries can match the displayed site (target) format (while keeping the existing site-only and target-only matching), and by applying the same behavior to global (“all”) search.

Changes:

• Add a decision-point “display value” search clause: site when target is empty, otherwise CONCAT(site, ' (', target, ')').
• Reuse the same decision-point search logic for both DECISION_POINT filtering and ALL search.
• Add unit tests covering the generated SQL clauses and update the paginated endpoint Swagger enum values.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
packages/backend/src/api/services/ExperimentService.ts	Adds the combined decision-point display search clause and factors decision-point search terms into a shared helper.
packages/backend/test/unit/services/ExperimentService.test.ts	Adds unit tests verifying decision-point and all-search include the new display-value matching clause.
packages/backend/src/api/controllers/ExperimentController.ts	Updates Swagger docs to include additional supported search keys (context, id, decisionPoint).

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.