[Meta Tracking Issue] Provider issues from DevTools

[elliette]

Now that the Provider panel in DevTools is a DevTools extension, we are closing out all provider bugs on our side. I'm copying them over to here in case you would like to fix them (for any that are still relevant).

• https://github.com/flutter/devtools/issues/3023
• https://github.com/flutter/devtools/issues/3022
• https://github.com/flutter/devtools/issues/3020
• https://github.com/flutter/devtools/issues/3003
• https://github.com/flutter/devtools/issues/2996
• https://github.com/flutter/devtools/issues/2997

[kenzieschmoll]

Also:

• https://github.com/flutter/devtools/issues/3069
• https://github.com/flutter/devtools/issues/4151