tree c3f16f06c3039bc690ed2be2a8fee6874c726d2c
parent 06c25f5e2b5c3268043179220c772b7e247c087e
author Jie Luo <jieluo@google.com> 1692916089 -0700
committer Copybara-Service <copybara-worker@google.com> 1692916187 -0700

Test part: upb CopyFrom the default empty message should just clear instead of deep copy
from memory

fix https://github.com/protocolbuffers/protobuf/issues/13485

PiperOrigin-RevId: 559888172