fix: oca credential formatter now returns all attributes

[amanji]

Summary of Changes

Previously the credential formatter in the OCA package was filtering attributes by flagged attributes in the capture base. The PR corrects that issue so that all attributes are returned by the credential formatter. This also fixes a secondary issue where attributes were not being returned at all by an additional filter.

Related Issues

Fixes: bcgov/aries-oca-explorer#3

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a8dac14) 61.35% compared to head (6efc80e) 61.35%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1042   +/-   ##
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  Coverage   61.35%   61.35%           
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  Files         170      170           
  Lines        5462     5462           
  Branches     1582     1582           
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  Hits         3351     3351           
  Misses       2087     2087           
  Partials       24       24           

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