chore: Add a type parameter to singer_sdk.helpers.types.Context

[edgarrmondragon]

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📚 Documentation preview 📚: https://meltano-sdk--2575.org.readthedocs.build/en/2575/

[codspeed-hq]

CodSpeed Performance Report

Merging #2575 will not alter performance

_{Comparing edgarrmondragon/chore/types-Context-type-param (20bfdce) with main (732e756)}

Summary

✅ 6 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.47%. Comparing base (732e756) to head (20bfdce).
Report is 125 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2575   +/-   ##
=======================================
  Coverage   89.47%   89.47%           
=======================================
  Files          58       58           
  Lines        4799     4799           
  Branches      937      937           
=======================================
  Hits         4294     4294           
  Misses        352      352           
  Partials      153      153           

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