chore: suppress JSONDtypeWarning in Anywidget display mode

Author: shuoweil

bigframes/display/html.py

@@ -364,7 +364,11 @@ def repr_mimebundle(
     if opts.repr_mode == "anywidget":
         try:
             with bigframes.option_context("display.progress_bar", None):
-                return get_anywidget_bundle(obj, include=include, exclude=exclude)
+                with warnings.catch_warnings():
+                    warnings.simplefilter(
+                        "ignore", category=bigframes.exceptions.JSONDtypeWarning
+                    )
+                    return get_anywidget_bundle(obj, include=include, exclude=exclude)
         except ImportError:
             # Anywidget is an optional dependency, so warn rather than fail.
             # TODO(shuowei): When Anywidget becomes the default for all repr modes,