chore(middleware-retry): move exportable constants to configurations

[trivikr]

Issue

Follow-up to #2435

Description

Moves constants to constants.ts in middleware-retry.
This is part of cleanup before introducing adaptive retry strategy.

Testing

CI

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (main@c7371b6). Click here to learn what that means.
The diff coverage is n/a.

❗ Current head 729e02f differs from pull request most recent head dba7a36. Consider uploading reports for the commit dba7a36 to get more accurate results

@@           Coverage Diff           @@
##             main    #2442   +/-   ##
=======================================
  Coverage        ?   58.95%           
=======================================
  Files           ?      488           
  Lines           ?    26116           
  Branches        ?     6203           
=======================================
  Hits            ?    15397           
  Misses          ?    10719           
  Partials        ?        0           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c7371b6...dba7a36. Read the comment docs.

[alexforsyth]

+1

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs and link to relevant comments in this thread.