fix(scope): Contextual search in Case Data tab returns no results for strings (and keywords/time/dates) present in listed entities

Description

The contextual search bar inside a Case's Data tab (the entity list scoped to that Case) fails to match keywords, strings, or dates that are clearly present in the listed entities. It's meant to filter only that Case's entity list — not a global search — but the filter logic itself isn't matching content correctly.

Environment

1. Version: { e.g. 1.2.3 } : OpenCTI 7.260902.0, On-Premise

Reproducible steps

1. Open a Case -> Data tab (entity/knowledge list).
2. Create or find an entity containing a known string (e.g. "filigran").
3. Search that same string in the Case's contextual search bar.
4. Observe the results.

Confirmed reproducible once several entities exist in that Case's list; same failure applies to date/time searches, not just strings.

Expected output

The matching entity is returned, scoped to that Case's Data tab.

Actual output

Zero results or unrelated/random entities returned, even with a confirmed match present.

Additional information

request can be shared internally if needed.