Add where clause to expand query for policies

[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (96c7643) 88.50% compared to head (76c2fb3) 88.51%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #55 +/- ## ========================================== + Coverage 88.50% 88.51% +0.01% ========================================== Files 32 32 Lines 1722 1724 +2 Branches 120 120 ========================================== + Hits 1524 1526 +2 Misses 175 175 Partials 23 23 ``` | [Files](https://app.codecov.io/gh/uatuko/gatekeeper/pull/55?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Uditha+Atukorala) | Coverage Δ | | |---|---|---| | [src/datastore/access-policies.cpp](https://app.codecov.io/gh/uatuko/gatekeeper/pull/55?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Uditha+Atukorala#diff-c3JjL2RhdGFzdG9yZS9hY2Nlc3MtcG9saWNpZXMuY3Bw) | `93.08% <100.00%> (+0.03%)` | :arrow_up: | | [src/datastore/rbac-policies.cpp](https://app.codecov.io/gh/uatuko/gatekeeper/pull/55?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Uditha+Atukorala#diff-c3JjL2RhdGFzdG9yZS9yYmFjLXBvbGljaWVzLmNwcA==) | `96.86% <100.00%> (+0.01%)` | :arrow_up: |

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