[🚀] Make update state inline to improve performance

[Nek-12]

We have a performance bottleneck with state updates because updateState is not inline. Additionally, it causes extremely annoying importing difficulties as the extension method has lower priority than the member.

This change will be a breaking source change, as no deprecation cycle is possible on the original method, or it will not be replaced automatically in the IDE. I should evaluate this on a bigger project internally to ensure there are no entire-codebase-refactorings.

[Nek-12]

I successfully inlined updateStateImmediate but inlining updateState is a huge refactoring and the function is also used extensively. It brings marginal performance benefits compared to the non-inline function. Will move to 4.0