what the max msg body size consumer supported

when I consumer some msg ，I got exception
```
terminate called after throwing an instance of "boost::exception_detail::clone_ipml>"

what(): zlib error
```
the original msg more than 7000 byte , After I delete some fields, msg size only 4000byte , and I solve this exception

my enviorment

os：rhel7.9

python： 3.9.16

rocket-client-cpp-2.0.0-centos.x86_64

rocketmq-client-python 2.0.0

Reproduce the zlib error with rocketmq-client-python 2.0.0 using messages around the reported 4,000–7,000 byte sizes on the stated environment. Trace the consumer path involving rocket-client-cpp and identify the supported message-body limit or the source of the failure. Done means the limit or failure condition is confirmed and clearly documented.

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