context to kwargs

[qingyun-wu]

Why are these changes needed?

• use kwargs instead of context
• printing

Related issue number

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.
• [x] I've added tests (if relevant) corresponding to the changes introduced in this PR.
• [x] I've made sure all auto checks have passed.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 86.36364% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 56.44%. Comparing base (af9b300) to head (1ea407d).

Files	Patch %	Lines
autogen/agentchat/conversable_agent.py	83.33%	3 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2064       +/-   ##
===========================================
+ Coverage   36.77%   56.44%   +19.67%     
===========================================
  Files          69       69               
  Lines        7133     7134        +1     
  Branches     1556     1685      +129     
===========================================
+ Hits         2623     4027     +1404     
+ Misses       4277     2765     -1512     
- Partials      233      342      +109     

Flag	Coverage Δ
unittests	56.34% <86.36%> (+19.59%)	:arrow_up:

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