fix SQLCompiler.collection_name crash on QuerySet.update() with MTI

Regression in e971120.

django_mongodb/compiler.py

@@ -673,6 +673,10 @@ def insert(self, docs, returning_fields=None):
         inserted_ids = self.collection.insert_many(docs).inserted_ids
         return inserted_ids if returning_fields else []
 
+    @cached_property
+    def collection_name(self):
+        return self.query.get_meta().db_table
+
 
 class SQLDeleteCompiler(compiler.SQLDeleteCompiler, SQLCompiler):
     def execute_sql(self, result_type=MULTI):
@@ -690,6 +694,10 @@ def check_query(self):
     def get_where(self):
         return self.query.where
 
+    @cached_property
+    def collection_name(self):
+        return self.query.base_table
+
 
 class SQLUpdateCompiler(compiler.SQLUpdateCompiler, SQLCompiler):
     def execute_sql(self, result_type):
@@ -754,6 +762,10 @@ def check_query(self):
     def get_where(self):
         return self.query.where
 
+    @cached_property
+    def collection_name(self):
+        return self.query.base_table
+
 
 class SQLAggregateCompiler(SQLCompiler):
     def build_query(self, columns=None):

django_mongodb/features.py

@@ -105,9 +105,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
         # https://github.com/mongodb-labs/django-mongodb/issues/161
         "queries.tests.RelatedLookupTypeTests.test_values_queryset_lookup",
         "queries.tests.ValuesSubqueryTests.test_values_in_subquery",
-        # SQLCompiler.collection_name raises StopIteration
-        "model_inheritance_regress.tests.ModelInheritanceTest.test_mti_update_grand_parent_through_child",
-        "model_inheritance_regress.tests.ModelInheritanceTest.test_mti_update_parent_through_child",
     }
     # $bitAnd, #bitOr, and $bitXor are new in MongoDB 6.3.
     _django_test_expected_failures_bitwise = {