[2/n] Directly call TrainingTypePlugin APIs instead of going through the Accelerator

[four4fish]

What does this PR do?

[[1/n] Call training_type_plugin collective functions directly instead of going through the Accelerator]

(#9677)

Fixes #9426

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[tchaton]

Overall LGTM !

[codecov]

Codecov Report

Merging #9901 (08a8785) into master (940b910) will decrease coverage by 4%.
The diff coverage is 89%.

@@           Coverage Diff           @@
##           master   #9901    +/-   ##
=======================================
- Coverage      93%     89%    -4%     
=======================================
  Files         179     179            
  Lines       15745   15770    +25     
=======================================
- Hits        14597   13993   -604     
- Misses       1148    1777   +629