Fix EZP-22128: Update Copyright info in extension.xml

(cherry picked from commit 966417f1db93f666c1f6a5935ef0e96799b256a3)
Fix EZP-22128: Update to include original author again
(cherry picked from commit 35c5d53343a4860af40461b4f26562d4b1858614)
Updated legacy extension package name

(cherry picked from commit 91948f6d14de3848c2ff397221421635e6e345f6)