Add task_ids query to legacy molecules rester

[munrojm]

Adds a query on task_ids to the legacy molecules rester

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 67.38%. Comparing base (daefc5f) to head (79a0a4c).

Files	Patch %	Lines
mp_api/client/routes/molecules/jcesr.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #897      +/-   ##
==========================================
+ Coverage   67.35%   67.38%   +0.02%     
==========================================
  Files          49       49              
  Lines        2515     2520       +5     
==========================================
+ Hits         1694     1698       +4     
- Misses        821      822       +1     

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