Pull request #4433: stream_tcp: Do not set global normalizer policy config when proxy...

Pull request #4433: stream_tcp: Do not set global normalizer policy config when proxy mode is enabled

Merge in SNORT/snort3 from ~DAVMCPHE/snort3:start_proxy_config_fix to master

Squashed commit of the following:

commit 7568e72e147ef564ed2ac545f700e25f86823a98
Author: davis mcpherson <davmcphe@cisco.com>
Date:   Tue Sep 10 08:40:34 2024 -0400

    stream_tcp: Do not overwrite global normalizer policy config option when proxy mode is enabled

    stream_tcp: add assert to verify configured normalizer policy is valid