[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. Each hit sends a holdout impression in the existing format.

Changes

• Local holdout hits on experiment and delivery rules skip the rule and continue to the next rule instead of returning
• Every local holdout hit is recorded and sends one holdout impression, regardless of sendFlagDecisions (DISABLE_DECISION_EVENT still suppresses it)
• Local hits share the existing mechanism used 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