Silence some @cached_property overrides for now

These are cached properties that override a plain attribute and so
stubtest complains with the following:

```
error: django.contrib.gis.db.backends.oracle.features.DatabaseFeatures.django_test_skips variable differs from runtime type functools.cached_property[Any]
Stub: in file /home/nick/Sources/_external/django-stubs/django-stubs/contrib/gis/db/backends/oracle/features.pyi:145
builtins.dict[builtins.str, builtins.set[builtins.str]]
Runtime:
<django.utils.functional.cached_property object at 0x7f628c1d8f50>

error: django.db.backends.oracle.features.DatabaseFeatures.django_test_skips variable differs from runtime type functools.cached_property[Any]
Stub: in file /home/nick/Sources/_external/django-stubs/django-stubs/db/backends/oracle/features.pyi:145
builtins.dict[builtins.str, builtins.set[builtins.str]]
Runtime:
<django.utils.functional.cached_property object at 0x7f628c1c5910>

error: django.db.backends.oracle.features.DatabaseFeatures.supports_frame_exclusion variable differs from runtime type functools.cached_property[Any]
Stub: in file /home/nick/Sources/_external/django-stubs/django-stubs/db/backends/oracle/features.pyi:102
builtins.bool
Runtime:
<django.utils.functional.cached_property object at 0x7f628c1c5b20>
```

There are many others of these that need looking at properly, so skip
them for now...

Author: ngnpope

django-stubs/contrib/gis/db/backends/oracle/features.pyi

@@ -1,14 +1,9 @@
-from typing import Any
-
 from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
 from django.db.backends.oracle.features import DatabaseFeatures as OracleDatabaseFeatures
-from django.utils.functional import cached_property
 
 class DatabaseFeatures(BaseSpatialFeatures, OracleDatabaseFeatures):
     supports_add_srs_entry: bool
     supports_geometry_field_introspection: bool
     supports_geometry_field_unique_index: bool
     supports_perimeter_geodetic: bool
     supports_dwithin_distance_expr: bool
-    @cached_property
-    def django_test_skips(self) -> dict[str, Any]: ...  # type: ignore[override]

scripts/stubtest/allowlist_todo.txt

@@ -137,6 +137,7 @@ django.contrib.gis.admin.GISModelAdmin.gis_widget
 django.contrib.gis.admin.options.GISModelAdmin.gis_widget
 django.contrib.gis.admin.options.GeoModelAdminMixin
 django.contrib.gis.admin.site
+django.contrib.gis.db.backends.oracle.features.DatabaseFeatures.django_test_skips
 django.contrib.gis.db.backends.postgis.operations.PostGISOperations.convert_extent
 django.contrib.gis.db.backends.postgis.operations.PostGISOperations.convert_extent3d
 django.contrib.gis.db.backends.postgis.schema.PostGISSchemaEditor.rast_index_template
@@ -428,8 +429,10 @@ django.db.backends.mysql.introspection.InfoLine._fields
 django.db.backends.mysql.introspection.InfoLine.comment
 django.db.backends.mysql.introspection.TableInfo
 django.db.backends.mysql.schema.DatabaseSchemaEditor.sql_alter_column_comment
+django.db.backends.oracle.features.DatabaseFeatures.django_test_skips
 django.db.backends.oracle.features.DatabaseFeatures.introspected_field_types
 django.db.backends.oracle.features.DatabaseFeatures.supports_collation_on_charfield
+django.db.backends.oracle.features.DatabaseFeatures.supports_frame_exclusion
 django.db.backends.postgresql.base.DatabaseWrapper.Database
 django.db.backends.postgresql.base.DatabaseWrapper.ops
 django.db.backends.postgresql.base.DatabaseWrapper.tzinfo_factory