Fixes parsing related regressions

Author: funkyfuture

_delb/builder.py

@@ -251,7 +251,7 @@ def handle_tag_end(self, data: TagEventData | None) -> TagNodeType:
         if __debug__ and data:
             assert result.namespace == data.namespace
             assert result.local_name == data.local_name
-            if data.attributes is not None:
+            if data.attributes:
                 assert result.attributes == data.attributes
 
         children = self.children.pop()

_delb/plugins/expat_parser.py

@@ -49,9 +49,7 @@ def characters(self, content: str):
     def endElementNS(  # noqa: N802
         self, name: tuple[None | str, str], qname: str | None
     ):
-        self.events.append(
-            (EventType.TagEnd, TagEventData(name[0] or "", name[1], None))
-        )
+        self.events.append((EventType.TagEnd, TagEventData(name[0] or "", name[1], {})))
 
     def ignorableWhitespace(self, whitespace: str):  # noqa: N802
         raise InvalidCodePath