gh-74690: typing: Simplify and optimise `_ProtocolMeta.instancecheck`#103159

Merged

AlexWaygood merged 3 commits intopython:mainfrom

AlexWaygood:runtime-protocols-nominal-optimisation

Apr 5, 2023

Commits on Mar 31, 2023

typing: Optimise nominal subtypes in `_ProtocolMeta.__instancecheck__`
AlexWaygood
committed

Commits on Apr 2, 2023

Merge branch 'main' into runtime-protocols-nominal-optimisation
AlexWaygood
authored

Commits on Apr 3, 2023

Simplify and optimise
AlexWaygood
committed