Limit model usage for large multiclass problems Default Algo

[bchen1116]

fix #2985

[codecov]

Codecov Report

Merging #3099 (9267fe1) into main (d14dbf2) will increase coverage by 0.1%.
The diff coverage is 100.0%.

@@           Coverage Diff           @@
##            main   #3099     +/-   ##
=======================================
+ Coverage   99.8%   99.8%   +0.1%     
=======================================
  Files        326     326             
  Lines      31698   31734     +36     
=======================================
+ Hits       31607   31643     +36     
  Misses        91      91             

Impacted Files	Coverage Δ
evalml/automl/automl_search.py	99.9% <ø> (ø)
evalml/automl/automl_algorithm/automl_algorithm.py	100.0% <100.0%> (ø)
...valml/automl/automl_algorithm/default_algorithm.py	100.0% <100.0%> (ø)
...lml/automl/automl_algorithm/iterative_algorithm.py	100.0% <100.0%> (ø)
.../automl_tests/test_automl_search_classification.py	100.0% <100.0%> (ø)
...valml/tests/automl_tests/test_default_algorithm.py	100.0% <100.0%> (ø)

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[jeremyliweishih]

This looks great to me @bchen1116! Only left a note about a utility add_result method in test_default_algorithm.

[eccabay]

Super interesting stuff!

[chukarsten]

This looks good to me. Just a comment about parametrizing the first test! I love that we're making efforts to and succeeding at reusing code.