Allow configuring prune strategies for sparse encoding in semantic fields.

[bzhangam]

Description

Allow configre prune strategy for sparse encoding of the semantic field.

Related Issues

Resolves #1351

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (ebe6f1b) to head (40cfbbb).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #1434       +/-   ##
============================================
- Coverage     80.14%       0   -80.15%     
============================================
  Files           159       0      -159     
  Lines          8467       0     -8467     
  Branches       1375       0     -1375     
============================================
- Hits           6786       0     -6786     
+ Misses         1151       0     -1151     
+ Partials        530       0      -530     

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