[AI-FSSDK] [FSSDK-12958] Continue rule evaluation after local holdout hit

[alexjoeyyong]

Summary

A local holdout hit used to return the holdout variation and stop evaluating the flag. Now it excludes the user from that rule only: the hit is recorded, the rule is skipped, and evaluation continues with the next rule, so the user can still be served by a later rule.

Changes

• Local holdout hits on experiment and delivery rules skip that rule and continue to the next rule instead of returning
• Each local holdout hit sends one holdout impression in the existing format, regardless of sendFlagDecisions
• Local hits reuse the existing mechanism for global holdouts bypassed by excludeTargetedDeliveries
• The final decision and its events are unchanged; global holdouts are unchanged

Jira Ticket

FSSDK-12958

Notes

• Legacy APIs (is_feature_enabled, get_feature_variable_*) now skip a locally held-out rule without sending a holdout impression, matching how they already treat excludeTargetedDeliveries holdouts