XWIKI-9680: Apostrophes in static list value are encoded on .display()
* Don't encode the XML special characters in ListClass#displayView(). This reverts the XML encoding added in XWIKI-8575 without affecting the fix. This change wasn't required by XWIKI-8575 and it broke more things (regressions) than it tried to fix.

(cherry picked from commit d2d40c55402b014a934230896ec9dacf23c15fbe)