[INTERNAL] ListBase: sticky documentation
[INTERNAL] ListBase: sticky documentation

Adding a limitation to the sticky feature that only the default height
of the toolbar control is supported with the sticky feature.
BCP: 1970433375

Change-Id: I4379abf8f82de4191b1f686f5d0b198381a5a582

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5