Update documentation for known issues

[larsmunkholm]

Description

I have been having an issue with FlashList showing the "rendered size" warning when navigating away from a screen with a FlashList.

First I solved the issue by only rendering FlashList if the screen was in focus, but that caused it to disappear when opening modals and being reset when closing the modal.

I discovered that setting React Navigation's option animationEnabled to false caused the screen to be 0px in width and height before unmounting.

[markrickert]

You need to sign the CLA

[larsmunkholm]

I've signed the CLA!

[larsmunkholm]

I don't think this PR has any effect on why the e2e check fails

[naqvitalha]

@larsmunkholm This PR may not be required with the latest improvements to the warning. Can you please check?

[larsmunkholm]

@larsmunkholm This PR may not be required with the latest improvements to the warning. Can you please check?

@naqvitalha Not sure what you want me to check. The Flash List package hasn't been updated since I made this PR.
I still get the same warning in RN with animationEnabled set to false

[naqvitalha]

@larsmunkholm We shipped FlashList v1.6.4 which improves this warning. The change was in main but the new package was released few days back.

[larsmunkholm]

More than 2 months later, and I'm still getting warnings.
For anyone passing by, replace animationEnabled: false with

transitionSpec: {
    open: { animation: "timing", config: { duration: 0 } },
    close: { animation: "timing", config: { duration: 0 } },
},
cardStyleInterpolator: CardStyleInterpolators.forNoAnimation,