Avoid circular import when importing django.db.backends.sqlite3.features directly

[alexisromtz-lab]

Importing django.db.backends.sqlite3.features directly before django.db.backends.sqlite3.base raises an ImportError due to a circular import on main (tested on CPython 3.12.13 with asgiref installed):

$ python -c "import django.db.backends.sqlite3.features"
ImportError: cannot import name 'DatabaseFeatures' from partially initialized module 'django.db.backends.sqlite3.features' (most likely due to a circular import)

Root cause

• django/db/backends/sqlite3/features.py (line 10) executes from .base import Database.
• django/db/backends/sqlite3/base.py imports DatabaseFeatures from .features and already aliases from sqlite3 import dbapi2 as Database (line 11).

Normal startup via django/db/utils.py hides the cycle because .base is loaded first, whereas modules that import sqlite3.features directly (such as django/contrib/gis/db/backends/spatialite/features.py) hit the circular import.

Proposed fix

In django/db/backends/sqlite3/features.py, import Database directly from sqlite3 instead of .base:

from sqlite3 import dbapi2 as Database