Remove monty decoding

[esoteric-ephemera]

Consistent with, and dependent on emmet-core #1372, removing monty_decode options because these are now implicitly handled by document serdes

Requires some changes to the grain boundaries and structure graph serdes in emmet, and will need to wait until a version with the fixes in 1372 is released

No breaking changes: users will be given a warning if monty_decode is used as a kwarg

Also removing some legacy, unused kwargs (supports_versions - retrieving other versions may be a future client addition)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 93.02326% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.19%. Comparing base (2478637) to head (d40cb19).

Files with missing lines	Patch %	Lines
mp_api/client/core/client.py	75.00%	2 Missing ⚠️
mp_api/client/mprester.py	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1047      +/-   ##
==========================================
- Coverage   76.44%   76.19%   -0.25%     
==========================================
  Files          50       51       +1     
  Lines        2793     2798       +5     
==========================================
- Hits         2135     2132       -3     
- Misses        658      666       +8     

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.