Refs #29547 -- Skipped an unsupported partial index test on older versions of SQLite.

Follow up to e5b8626c0e.

django/db/backends/base/features.py

@@ -275,6 +275,7 @@ class BaseDatabaseFeatures:
 
     # Does the backend support partial indexes (CREATE INDEX ... WHERE ...)?
     supports_partial_indexes = True
+    supports_functions_in_partial_indexes = True
 
     def __init__(self, connection):
         self.connection = connection

django/db/backends/sqlite3/features.py

@@ -39,3 +39,4 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     # reasonably performant way.
     supports_pragma_foreign_key_check = Database.sqlite_version_info >= (3, 20, 0)
     can_defer_constraint_checks = supports_pragma_foreign_key_check
+    supports_functions_in_partial_indexes = Database.sqlite_version_info >= (3, 15, 0)

tests/indexes/tests.py

@@ -303,6 +303,7 @@ class PartialIndexTests(TransactionTestCase):
             ))
             editor.remove_index(index=index, model=Article)
 
+    @skipUnlessDBFeature('supports_functions_in_partial_indexes')
     def test_multiple_conditions(self):
         with connection.schema_editor() as editor:
             index = Index(