[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).

• Field value displaying <unknown error> on provider page flutter/devtools#3023
• provider field values do not update on changes flutter/devtools#3022
• Expose value of ValueNotifiers in Provider page flutter/devtools#3020
• Editing value on provider throws eval error flutter/devtools#3003
• Provider screen creates a large number of EvalOnDartLibrary instances flutter/devtools#2996
• Editing the value of the evalHistory field of the DebuggerController provider triggers exceptions flutter/devtools#2997

[kenzieschmoll]

Also:

• Provider throwing exception when connected to flutter web app flutter/devtools#3069
• DevTools Provider is not updating flutter/devtools#4151

[elliette]

Adding:

• Error Library matching package bloc not found flutter/devtools#8330