Fix "implicit optional", e.g. arg: int = None
#1239
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The latest version of Pyright makes calling a function with an "implicit optional" a type error. An "implicit optional" is like the following code, where a parameter is annotated with a type that doesn't include
Nonebut the default value isNone:More info here: https://docs.astral.sh/ruff/rules/implicit-optional/
This PR adds
typing.Optionalwhere necessary.