Disable nested monty decode for some data

[munrojm]

This PR disables monty decoding for nested objects in tasks and provenance to fix issues related to varying schema. Objects with types defined in the pydantic models are still instantiated for these endpoints.

[codecov-commenter]

Codecov Report

Patch coverage: 69.14% and project coverage change: -2.49 ⚠️

Comparison is base (98eb360) 81.05% compared to head (a4c0ce5) 78.57%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #784      +/-   ##
==========================================
- Coverage   81.05%   78.57%   -2.49%     
==========================================
  Files          36       38       +2     
  Lines        1758     1862     +104     
==========================================
+ Hits         1425     1463      +38     
- Misses        333      399      +66     

Impacted Files	Coverage Δ
mp_api/client/core/utils.py	59.61% <0.00%> (ø)
mp_api/client/routes/_user_settings.py	100.00% <ø> (ø)
mp_api/client/routes/charge_density.py	67.16% <0.00%> (ø)
mp_api/client/routes/electronic_structure.py	88.81% <ø> (ø)
mp_api/client/routes/materials.py	68.57% <ø> (-7.15%)	⬇️
mp_api/client/routes/summary.py	94.82% <ø> (-1.73%)	⬇️
mp_api/client/routes/chemenv.py	23.25% <23.25%> (ø)
mp_api/client/routes/absorption.py	32.25% <32.25%> (ø)
mp_api/client/routes/alloys.py	52.63% <60.00%> (-6.20%)	⬇️
mp_api/client/mprester.py	59.13% <65.90%> (+0.33%)	⬆️
... and 27 more

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