fix: add missing null checks in JDBCStore

[sakethpanuganti]

Added null parameter validation in JDBCStore to prevent accidental NullPointerExceptions before argument dereferences.

Null-guard hardening

• Validate mID before dereference in removeMessage(DestinationUID, SysMessageID, ...).
• Validate iids and states before array-length access in storeMessage(...).
• Validate dID alongside mID in getConsumerUIDsInternal(...).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud