Hide tenant-scope shared Xperts from organization user accounts

[tiven-w]

Feature request

Tenant-scope shared Xperts should not appear in organization user accounts, even when those users have permission to access them.

Problem

Organization users may currently see tenant-scope shared Xperts in their account views if they have access. This can be confusing because tenant-scoped shared Xperts are not organization-owned or organization-scoped items, so they should not be surfaced as part of the organization user account experience.

Expected behavior

• Organization user accounts should not list tenant-scope shared Xperts.
• This filtering should apply even when the organization user has access permissions.
• Access permissions can remain intact for direct access or tenant-level contexts, but the Xpert should be hidden from organization account lists/views.

Acceptance criteria

• Tenant-scope shared Xperts are excluded from organization user account Xpert lists/views.
• Organization-scoped or user-relevant Xperts continue to appear as before.
• Existing access control behavior is not broken; this change only affects visibility in organization user account contexts.