nit: slightly improve repr style

Apart from that, we're not sure how expensive UUIDs are, so it might not
be a good idea to do this generally.

src/pypdfium2/internal/bases.py

@@ -65,7 +65,7 @@ def __init__(self, close_func, *args, obj=None, needs_free=True, **kwargs):
 
 
     def __repr__(self):
-        return f"<{str(self._uuid)[:8]}:{type(self).__name__}>"
+        return f"<{type(self).__name__} uuid:{str(self._uuid)[:8]}>"
 
 
     def _attach_finalizer(self):