[BREAKING_CHANGES] Stop stripping dots in azure model mapper

[krissetto]

Dots (.) are valid model and deployments names in Azure AI Foundry deployments for all models newer than 3.5, and without customization the deployment name matches the model name so it seems sensible to leave them in for non 3.5 models.

I kept the original : stripping in place, not entirely sure what that was originally there for but i haven't found issues around it for now

Similar almost complete PR found here, but the original author closed it: #1004

Fixes this issue: #978

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.59%. Comparing base (8e5611c) to head (1a1593d).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1079   +/-   ##
=======================================
  Coverage   99.59%   99.59%           
=======================================
  Files          34       34           
  Lines        2206     2209    +3     
=======================================
+ Hits         2197     2200    +3     
  Misses          6        6           
  Partials        3        3           

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