🔒 Sentinel: [CRITICAL] Fix JPQL injection in findByFilter methods

[ManupaKDU]

🎯 What: Fixed a critical JPQL injection vulnerability in multiple Bill Controllers (findByFilter method) where the property parameter was directly concatenated into the JPQL query string.

⚠️ Risk: An attacker could exploit this by providing a crafted property string, potentially allowing them to bypass logic, enumerate data, or execute arbitrary JPQL commands, leading to data exposure or corruption.

🛡️ Solution: Implemented a strict allowlist (whitelist) validation. The property parameter is now validated against a list of known safe and expected field names (e.g., "insId", "deptId", "patient.person.name") before the query is constructed. If the property is not in the allowlist, the method safely returns false, completely preventing the injection.

Affected Controllers:

• OpdOrderController
• OpdPreBillController
• BillController
• OpdBatchBillCancellationController
• OpdTabPreBillController
• CollectingCentreBillController
• OpticianRepairBillController
• OpdBillController

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PR created automatically by Jules for task 5915833914436768588 started by @manupawickramasinghe

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