Prevent the context from changing which forces unnecessary rerenders

[mdkwock]

Fixes #2370 by saving the context as a state object so the object doesn't change. Currently whenever the GiftedChat component re-renders it causes the context to change as the context is given a new value. this causes all the components that rely on the context to update, which is a lot of them.

[mdkwock]

One note is I'm not entirely sure what other bugs this may bring out that were being hidden by the constant re-renders

[amerikan]

@Johan-dutoit looks good to me. This seems to fix some lag!

[Eigilak]

Looks good to me!

[hstaudacher]

@Johan-dutoit would you mind taking a look at this?

[Johan-dutoit]

Defo want to merge this in. Please resolve conflicts 🙏

[amerikan]

@mdkwock please resolve conflicts if you can. If not, I can try soon! @Johan-dutoit this is a much needed change since this makes everything work a lot faster! 🐎 Kudos to @mdkwock for tackling this.

[amerikan]

@mdkwock @Johan-dutoit i ported over this to the new hook based component: #2379

[mdkwock]

@amerikan i would probably rewrite what i wrote to not use state, and instead use useMemo with dependencies. this would be a bit cleaner and keep the values out of state. I couldn't do this originally because as a class component you don't have access to the useMemo hooks and the like.

[amerikan]

@mdkwock thanks for the feedback! The other PR is one of my many planned iterations to modernize the main component now that's using functional components with hooks. I just threw in your modifications as a separate commit so that the library is useable as soon as possible.

[mdkwock]

@amerikan @Johan-dutoit okay resolved conflicts and updated to use useMemo as my comment stated, i think it's cleaner looking than using state.

[amerikan]

@mdkwock nice! I just removed the commit from my PR since you're addressing it here.

@Johan-dutoit when you merge this, it'll be good to bump version on npm 🙏🏼

[Johan-dutoit]

@amerikan FYI bumping npm is unavailable until the typescript/eslint errors are resolved.