DrawList: fixed CloneOutput() taking a copy of the ImDrawListSharedData pointer. Missing Changelog. (#8894, #1860)

docs/CHANGELOG.txt

@@ -43,6 +43,8 @@ Breaking Changes:
 
 Other Changes:
 
+- DrawList: Fixed CloneOutput() unnecessarily taking a copy of the ImDrawListSharedData
+  pointer, which could to issue when deleting the cloned list. (#8894, #1860)
 - Examples: Android: Android+OpenGL3: update Gradle project (#8888, #8878) [@scribam]