chore: get one trackedEntity via path and query param is identical DHIS2-18541

[teleivo]

as already done for /tracker/events in #18943

• Program program parameter was always null in DefaultTrackedEntityService.
• Make controller test a postgres one. The controller test was only able to test the /tracker/trackedEntities/{uid} using H2 and not the collection one.
• Set default orgUnitMode in OperationParams to ACCESSIBLE as this is the safest/least surprising/mostly what we want. null is not a valid and makes the OperationParams harder to use.

Next

• migrate the remaining tests in the controller test to use the json fixtures instead of the manager to setup their data. Using the manager leads to data that would not pass our importer.
• (next year 😅) improve test setup
  • We need to make our test code more composable. Extract a setup class to create metadata/tracker data so we are free to extend any test class and do not create the next TestBase 😬
  • We need to be able to share test code across controller and service integration tests. This is currently not possible due to our module setup. Unless we put test code into src/main in the tracker module. Should we merge the test-integration and test-web-api modules? We need to investigate the pros/cons.

[sonarqubecloud]

Quality Gate failed

Failed conditions
6 New issues
3 New Blocker Issues (required ≤ 0)
6 New Code Smells (required ≤ 0)

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