Merge branch '788-regional-tel-format-isn-t-accepted' into 'release-3.0'

Resolve "Regional tel format isn't accepted"

See merge request !1189

CHANGELOG.rst

@@ -37,6 +37,7 @@ Fixed
 * Retry button on error 500 page did not trigger a reload of the page.
 * When the Celery worker wasn't able to execute all tasks in time, notifications were sent multiple times.
 * Changing the maintenance mode state spawned another SPA instance in the iframe
+* Phone numbers couldn't be in regional format.
 
 `3.0b3`_ - 2023-03-19
 ---------------------

aleksis/core/settings.py

@@ -14,6 +14,7 @@ from .util.core_helpers import (
     get_app_settings_overrides,
     merge_app_settings,
     monkey_patch,
+    lazy_preference,
 )
 
 monkey_patch()
@@ -555,6 +556,8 @@ LANGUAGE_CODE = _settings.get("l10n.lang", "en")
 TIME_ZONE = _settings.get("l10n.tz", "UTC")
 USE_TZ = True
 
+PHONENUMBER_DEFAULT_REGION = lazy_preference("internationalisation", "phone_number_country")
+
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/2.1/howto/static-files/