Add support for both Qtip and UDP traffic for Server Listeners.

[ProjectsByJackHe]

Description

Currently, we have an execution parameter (QUIC_EXECUTION_CONFIG_FLAG_QTIP) that you set to either process packets via QTIP or normal QUIC/UDP traffic.

For a server listener, that means you can only talk to clients with the same execution profile as you; you either deal over QTIP or QUIC/UDP.

This is inconvenient and sometimes a blocker when you want your listener to accept from clients with varying execution parameters (QTIP through the Azure load balancer, normal QUIC/UDP for on-prem clients)

Closes: #3516

Testing

Test modifications are required to ensure normal QUIC/UDP endpoint is still supported when you set the QUIC_EXECUTION_CONFIG_FLAG_QTIP parameter.

Documentation

N/A

[codecov]

Codecov Report

Attention: Patch coverage is 25.49020% with 38 lines in your changes missing coverage. Please review.

Project coverage is 86.45%. Comparing base (47042ad) to head (1cde3f8).
Report is 13 commits behind head on main.

Files with missing lines	Patch %	Lines
src/core/connection.c	0.00%	21 Missing ⚠️
src/core/listener.c	43.33%	17 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4803      +/-   ##
==========================================
+ Coverage   85.92%   86.45%   +0.52%     
==========================================
  Files          56       56              
  Lines       17425    17672     +247     
==========================================
+ Hits        14973    15278     +305     
+ Misses       2452     2394      -58     

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[ProjectsByJackHe]

will address this.