DM-46363: Inject SqlQueryContext into ObsCoreManager at top level

[dhirving]

Modified the ExposureRegionFactory interface to no longer expose SqlQueryContext outside daf_butler.

The ExposureRegionFactory interface has one internal implementation and one external implementation in the dax_obscore package. The internal implementation needs privileged access to SqlRegistry internals, but the external one does not. The external one now needs to support RemoteButler and can no longer provide a SqlRegistry object.

In order to make this change, the SqlQueryContext is now created once when ObscoreLiveTableManager is created and passed to the internal ExposureRegionFactory's constructor, instead of being part of the ExposureRegionFactory method call interface.

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes
• (if changing dimensions.yaml) make a copy of dimensions.yaml in configs/old_dimensions

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.69%. Comparing base (910bec6) to head (4627fb8).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1081   +/-   ##
=======================================
  Coverage   89.69%   89.69%           
=======================================
  Files         360      360           
  Lines       47059    47061    +2     
  Branches     9661     9661           
=======================================
+ Hits        42211    42213    +2     
  Misses       3480     3480           
  Partials     1368     1368           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[andy-slac]

Looks great.