[FIX] sap.m.ActionSheet: Scrollbar is now visible on tablet
[FIX] sap.m.ActionSheet: Scrollbar is now visible on tablet

- The scrollbar was not visible on android
tablets due to the applied style.

JIRA: BGSOFUIRILA-2502
Change-Id: Ief9586a295604a48685f36a84285f717599fe2c3

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