Expose LWC compiler settings to Jest config items.

[Mr-VincentW]

I need the disableSyntheticShadowSupport flag to be set for the LWC compiler for some of my components but unfortunately there seems to be no way to pass in custom configs to the lwcCompiler.transformSync(...) invocation in @lwc/jest-transformer, which disables me from testing the components involved.

Describe the solution you'd like
Exposing such configurations to maybe jest.config.js.

Thanks.