[exporter] [chore] Initialize batchSender and queueSender after configuration - #1

[sfc-gh-sili]

Description

This PR changes initialization of batchSender and queueSender to AFTER configuration. That way we get to access queueConfig and batcherConfig in the same place.

Context: This is some pre-work for changing queue->batch from a pushing model to a pulling model. We will be initialization a queueBatchSender(queueConfig, batcherConfig) if both queue and batcher are enabled and initialize batchSender(batchConfig) if only batcher is enabled. This change enables us to achieve the goal without changing config API.

Link to tracking issue

#10368

Testing

Ran opentelemetry-collector$ make to make sure all tests still pass.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.23%. Comparing base (a26068b) to head (67e094d).
Report is 14 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #11041   +/-   ##
=======================================
  Coverage   92.23%   92.23%           
=======================================
  Files         406      406           
  Lines       19101    19108    +7     
=======================================
+ Hits        17618    17625    +7     
  Misses       1123     1123           
  Partials      360      360           

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[mx-psi]

Will merge by Friday if there are not further comments