bug(authz): Fix warnings and panics appearing in tests

[michalkrzyz]

`•time="2026-03-05T17:31:48Z" level=info msg="Initializing authorization with OpenFGA"
time="2026-03-05T17:31:48Z" level=info msg="Added relation tuple: (user1, document1, document, owner)" event=HandleAddAuthzRelation event-step="OpenFGA AddRelation" objectId=document1 objectType=document relation=owner user=user1 userType=user
•• SUCCESS! 5.753721053s PASS
[1772731887] e2e Suite - 214/214 specs time="2026-03-05T17:31:48Z" level=error msg="Could not parse OpenFGA model file: open ./../internal/openfga/model/model.fga: no such file or directory"
time="2026-03-05T17:31:48Z" level=info msg="Starting Non Blocking HTTP Server..."
time="2026-03-05T17:31:48Z" level=error msg="Error when exeute joined callers: [refresh_mvServiceIssueCounts_proc: Error 1146 (42S02): Table 'heurekajaedqfh41a2lha2.mvServiceIssueCounts_tmp' doesn't exist]" error="Error when exeute joined callers: [refresh_mvServiceIssueCounts_proc: Error 1146 (42S02): Table 'heurekajaedqfh41a2lha2.mvServiceIssueCounts_tmp' doesn't exist]"
[HEUREKA] 2026/03/05 - 17:31:49 | 200 | 2.839041ms | ::1 | | POST "/query"
•time="2026-03-05T17:31:49Z" level=info msg="All goroutines exited cleanly."
time="2026-03-05T17:31:49Z" level=error msg="Could not parse OpenFGA model file: open ./../internal/openfga/model/model.fga: no such file or directory"
time="2026-03-05T17:31:49Z" level=info msg="Starting Non Blocking HTTP Server..."
[HEUREKA] 2026/03/05 - 17:31:49 | 200 | 811.772µs | ::1 | | POST "/query"
•time="2026-03-05T17:31:49Z" level=info msg="All goroutines exited cleanly."
time="2026-03-05T17:31:50Z" level=error msg="Could not parse OpenFGA model file: open ./../internal/openfga/model/model.fga: no such file or directory"
time="2026-03-05T17:31:50Z" level=info msg="Starting Non Blocking HTTP Server..."
[HEUREKA] 2026/03/05 - 17:31:50 | 200 | 7.488551ms | ::1 | | POST "/query"
time="2026-03-05T17:31:50Z" level=info msg="All goroutines exited cleanly."
•time="2026-03-05T17:31:50Z" level=error msg="Could not parse OpenFGA model file: open ./../internal/openfga/model/model.fga: no such file or directory"
time="2026-03-05T17:31:50Z" level=info msg="Initializing OIDC auth"
time="2026-03-05T17:31:50Z" level=info msg="Starting Non Blocking HTTP Server..."
time="2026-03-05T17:31:51Z" level=error msg="Unauthorized access: OidcAuthMethod(failed to verify signature: failed to verify id token signature)"
time="2026-03-05T17:31:51Z" level=info msg="All goroutines exited cleanly."
•time="2026-03-05T17:31:51Z" level=error msg="Could not parse OpenFGA model file: open ./../internal/openfga/model/model.fga: no such file or directory"
time="2026-03-05T17:31:51Z" level=info msg="Starting Non Blocking HTTP Server..."
time="2026-03-05T17:31:51Z" level=info msg="All goroutines exited cleanly."
•time="2026-03-05T17:31:52Z" level=error msg="Could not parse OpenFGA model file: open ./../internal/openfga/model/model.fga: no such file or directory"
time="2026-03-05T17:31:52Z" level=info msg="Starting Non Blocking HTTP Server..."
time="2026-03-05T17:31:52Z" level=info msg="All goroutines exited cleanly."
•time="2026-03-05T17:31:52Z" level=error msg="Could not parse OpenFGA model file: open ./../internal/openfga/model/model.fga: no such file or directory"
time="2026-03-05T17:31:52Z" level=info msg="Starting Non Blocking HTTP Server..."
time="2026-03-05T17:31:52Z" level=error msg="No Issue Repository found by name" default_priority=100 default_repo_name=nvd event=OnServiceCreate event-step=GetIssueRepository payload="&{0xc0000c0a00}"
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x1a6cdec]

goroutine 1841 [running]:
github.com/cloudoperators/heureka/internal/app/service.OnServiceCreateAuthz({0x2965e78?, 0xc00079acb0?}, {0x28f9ea0, 0xc00058a130}, {0x0, 0x0})
/home/runner/work/heureka/heureka/internal/app/service/service_handler_events.go:208 +0x28c
github.com/cloudoperators/heureka/internal/app/event.EventHandlerFunc.HandleEvent(0x21cd2e0?, {0x2965e78?, 0xc00079acb0?}, {0x28f9ea0?, 0xc00058a130?}, {0x0?, 0x0?})
/home/runner/work/heureka/heureka/internal/app/event/event_registry.go:22 +0x47
github.com/cloudoperators/heureka/internal/app/event.(*eventRegistry).processEvent(0xc000a4dce0, {0x28f9ea0, 0xc00058a130})
/home/runner/work/heureka/heureka/internal/app/event/event_registry.go:146 +0xfd
github.com/cloudoperators/heureka/internal/app/event.(*eventRegistry).worker(0xc000a4dce0, {0x290f378, 0xc000596910})
/home/runner/work/heureka/heureka/internal/app/event/event_registry.go:135 +0x85
created by github.com/cloudoperators/heureka/internal/app/event.(*eventRegistry).Run in goroutine 1702
/home/runner/work/heureka/heureka/internal/app/event/event_registry.go:111 +0x3b

Ginkgo ran 23 suites in 24.782124446s

There were failures detected in the following suites:
e2e ./internal/e2e
`

panic has to be avoided, as well as authz warnings should not be visible in logs not related to authz

Task Description
A clear and concise description of what the task entails.

Acceptance Criteria:

• No warning related to authz is visible in tests related to not authz context
• Panic should be avoided (either function is called from wrong place or it has to be guarded against nil in parameters)

Expected Test:
Add any information about how this will be tested.

[michalkrzyz]

https://github.com/cloudoperators/heureka/actions/runs/22728359082/job/65910253751

[michalkrzyz]

Consider disable of openfga feature for all not related tests