Fix setting WebP effort to 0 in constructor #3259

[AlexanderTheGrey]

Setting WebP effort to 0 in the constructor caused the effort to use the
default value of 4.

[lovell]

Would something like the following work to ensure we still support the deprecated reductionEffort property?

const effort = is.defined(options.effort) ? options.effort : options.reductionEffort;

Please can you remove the unrelated layout changes too.

[AlexanderTheGrey]

Would something like the following work to ensure we still support the deprecated reductionEffort property?

Ah, yes, I modified the code as if it were removed.

Please can you remove the unrelated layout changes too.

Yeah, my VS Code automatically formatted it for some reason.

[coveralls]

Coverage remained the same at 100.0% when pulling 717b1dc on AlexanderTheGrey:BUG-3259 into b10d8f8 on lovell:main.

[lovell]

Brilliant, thank you!