[INTERNAL] sap.m.IconTabBar: Fix stretchContentHeight option on Android
4.3

Android 4.3 has limited Flexible Box support.

Change-Id: Idfe1a3d64fad4eaabb34c56cfa69d530d87d5b7b
Merge "[INTERNAL] sap.m.IconTabBar: Fix stretchContentHeight option on Android 4.3"