Flaky test: tests/sentry/dashboards/endpoints/test_organization_dashboard_details.py::OrganizationDashboardDetailsDeleteTest::test_allow_delete_as_superuser_but_no_edit_perms

Failing test: `tests/sentry/dashboards/endpoints/test_organization_dashboard_details.py::OrganizationDashboardDetailsDeleteTest::test_allow_delete_as_superuser_but_no_edit_perms`
Sentry sha: 3ae13ebdfdfbfd0d73e8a04d635b9ae4d95251de
Run: https://github.com/getsentry/sentry/actions/runs/22295054671

```
.venv/lib/python3.13/site-packages/django/db/backends/utils.py:105: in _execute
return self.cursor.execute(sql, params)
src/sentry/db/postgres/decorators.py:16: in inner
return func(self, *args, **kwargs)
src/sentry/db/postgres/base.py:95: in execute
return self.cursor.execute(sql, params)
E psycopg2.errors.UniqueViolation: duplicate key value violates unique constraint "sentry_dashboard_pkey"
E DETAIL: Key (id)=(67) already exists.

The above exception was the direct cause of the following exception:
tests/sentry/dashboards/endpoints/test_organization_dashboard_details.py:772: in test_allow_delete_as_superuser_but_no_edit_perms
dashboard = Dashboard.objects.create(
src/sentry/silo/base.py:158: in override
return original_method(*args, **kwargs)
.venv/lib/python3.13/site-packages/django/db/models/manager.py:87: in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
src/sentry/silo/base.py:158: in override
return original_method(*args, **kwargs)
.venv/lib/python3.13/site-packages/django/db/models/query.py:665: in create
obj.save(force_insert=True, using=self.db)
src/sentry/silo/base.py:158: in override
return original_method(*args, **kwargs)
.venv/lib/python3.13/site-packages/django/db/models/base.py:902: in save
self.save_base(
src/sentry/silo/base.py:158: in override
return original_method(*args, **kwargs)
.venv/lib/python3.13/site-packages/django/db/models/base.py:1008: in save_base
updated = self._save_table(
.venv/lib/python3.13/site-packages/django/db/models/base.py:1169: in _save_table
results = self._do_insert(
.venv/lib/python3.13/site-packages/django/db/models/base.py:1210: in _do_insert
return manager._insert(
.venv/lib/python3.13/site-packages/django/db/models/manager.py:87: in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
.venv/lib/python3.13/site-packages/django/db/models/query.py:1873: in _insert
return query.get_compiler(using=using).execute_sql(returning_fields)
.venv/lib/python3.13/site-packages/django/db/models/sql/compiler.py:1882: in execute_sql
cursor.execute(sql, params)
.venv/lib/python3.13/site-packages/django/db/backends/utils.py:122: in execute
return super().execute(sql, params)
.venv/lib/python3.13/site-packages/sentry_sdk/utils.py:1870: in runner
return original_function(*args, **kwargs)
.venv/lib/python3.13/site-packages/django/db/backends/utils.py:79: in execute
return self._execute_with_wrappers(
.venv/lib/python3.13/site-packages/django/db/backends/utils.py:92: in _execute_with_wrappers
return executor(sql, params, many, context)
src/sentry/db/postgres/base.py:70: in _execute__include_sql_in_error
return execute(sql, params, many, context)
src/sentry/db/postgres/base.py:58: in _execute__clean_params
return execute(sql, clean_bad_params(params), many, context)
src/sentry/testutils/hybrid_cloud.py:133: in __call__
return execute(*params)
.venv/lib/python3.13/site-packages/django/db/backends/utils.py:100: in _execute
with self.db.wrap_database_errors:
.venv/lib/python3.13/site-packages/django/db/utils.py:91: in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
.venv/lib/python3.13/site-packages/django/db/backends/utils.py:105: in _execute
return self.cursor.execute(sql, params)
src/sentry/db/postgres/decorators.py:16: in inner
return func(self, *args, **kwargs)
src/sentry/db/postgres/base.py:95: in execute
return self.cursor.execute(sql, params)
E django.db.utils.IntegrityError: duplicate key value violates unique constraint "sentry_dashboard_pkey"
E DETAIL: Key (id)=(67) already exists.
E 
E SQL: INSERT INTO "sentry_dashboard" ("id", "title", "created_by_id", "organization_id", "date_added", "visits", "last_visited", "filters", "prebuilt_id") VALUES (%s, %s, %s, %s, %s, %s, %s, %s, DEFAULT) RETURNING "sentry_dashboard"."id", "sentry_dashboard"."prebuilt_id"
```

Start with tests/sentry/dashboards/endpoints/test_organization_dashboard_details.py at line 772 and run the named test to reproduce the duplicate sentry_dashboard primary-key failure. Inspect the Dashboard.objects.create call and the reported id collision; done means the test runs reliably without the IntegrityError.

Written by the indexing model from the issue text.