feat: server stream supports requests without parameters

[funky-eyes]

What is the purpose of the change?

在http1.1上服务端做推送时可能不需要参数，而是通过url来区分业务，比如一些广播频道
In HTTP/1.1, when the server performs push, it may not require parameters but rather differentiate the business logic through the URL, such as with broadcast channels.

Checklist

• Make sure there is a GitHub_issue field for the change.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test to verify your logic correction. If the new feature or significant change is committed, please remember to add sample in dubbo samples project.
• Make sure gitHub actions can pass. Why the workflow is failing and how to fix it?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 64.00000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 60.78%. Comparing base (0fd3706) to head (6bbc1a6).

Files with missing lines	Patch %	Lines
...he/dubbo/rpc/model/ReflectionMethodDescriptor.java	72.22%	3 Missing and 2 partials ⚠️
...otocol/tri/h12/ServerStreamServerCallListener.java	20.00%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                3.3   #15026      +/-   ##
============================================
+ Coverage     60.76%   60.78%   +0.01%     
+ Complexity    10867    10865       -2     
============================================
  Files          1882     1882              
  Lines         85990    85997       +7     
  Branches      12878    12881       +3     
============================================
+ Hits          52251    52271      +20     
+ Misses        28297    28286      -11     
+ Partials       5442     5440       -2     

Flag	Coverage Δ
integration-tests	32.99% <12.00%> (-0.15%)	⬇️
samples-tests	29.20% <40.00%> (-0.03%)	⬇️
unit-tests	58.94% <64.00%> (+0.04%)	⬆️

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[EarthChen]

LGTM