hook-list are updated to accept a sender argument

[RohitRathore1]

Why are these changes needed?

this change ensures that when it invoke _process_message_before_send, the hooks executed within will have access to the sender, recipient, message, and silent flag.

Related issue number

Closes #1788

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.02%. Comparing base (d797d26) to head (7372b85).
Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1799       +/-   ##
===========================================
+ Coverage   37.05%   48.02%   +10.97%     
===========================================
  Files          62       62               
  Lines        6499     6528       +29     
  Branches     1438     1571      +133     
===========================================
+ Hits         2408     3135      +727     
+ Misses       3898     3144      -754     
- Partials      193      249       +56     

Flag	Coverage Δ
unittests	47.94% <ø> (+10.89%)	⬆️

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[radman-x]

@RohitRathore1 This looks good, thnx.

[RohitRathore1]

@RohitRathore1 This looks good, thnx.

Thanks, I need to make changes in test. I will do in few hours.

[radman-x]

Looks good.

[victordibia]

Looks good to me.