feat: fix N+1 problem #2587

Job	Run time
unit-tests	49s
integration-tests (SummitRSVPInvitationServiceTest, --filter SummitRSVPInvitationServiceTest)	2m 47s
integration-tests (SummitRSVPServiceTest, --filter SummitRSVPServiceTest)	2m 40s
integration-tests (EntityModelUnitTests, tests/Unit/Entities/)	4m 25s
integration-tests (AuditUnitTests, tests/Unit/Audit/)	2m 35s
integration-tests (OAuth2Tests, tests/oauth2/)	58m 18s
integration-tests (AuditOtlpStrategyTest, --filter AuditOtlpStrategyTest)	2m 26s
integration-tests (Repositories, --filter tests/Repositories/)	2m 21s
integration-tests (SummitOrderServiceTest, --filter SummitOrderServiceTest)	3m 5s
integration-tests (GuzzleTracingTest, --filter GuzzleTracingTest)	2m 27s
integration-tests (AuditEventTypesTest, --filter AuditEventTypesTest)	2m 44s
integration-tests (Services, --filter tests/Unit/Services/)	2m 43s
	1h 27m 20s

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