Good question! It’s been murky if Fox/Lucasfilm ever had the film elements or Nelvana had them. They lost some stuff in a vault fire some years ago, and the workprint of Rock & Rule was a casualty.
The sound and film elements are apparently in the Lucasfilm archives…there was a photo of a pile of that material posted once on StarWars.com in 2008.
The Story Of The Faithful Wookiee? I have never heard the animated segment called that before…
https://twitter.com/CBR/status/1371966955305963522
Yep - it’s what the title card says at the beginning of the cartoon, and you can almost kind of read it if you squint.
–SKot