[INTERNAL][FIX] sap.f.DynamicPage: custom scrollbar visibility in edge corrected
[INTERNAL][FIX] sap.f.DynamicPage: custom scrollbar visibility in edge corrected

- In "_needsVerticalScrollBar" method of the DynamicPage
- we use 1px threshhold for IE.
- Now I add the same threshold for Edge as well.
- The reason is the same as in the past:
- the clientHeight returns results in 1px difference compared to the scrollHeight

BCP: 1770217875
Change-Id: Ib961af8799c496a3416949808ff2d9e8e860a9ef

SAP/openui5,olirogers/openui5,cschuff/openui5,SAP/openui5,SQCLabs/openui5,cschuff/openui5,SQCLabs/openui5,SAP/openui5,olirogers/openui5,SAP/openui5,nzamani/openui5,SQCLabs/openui5,nzamani/openui5,cschuff/openui5,nzamani/openui5,olirogers/openui5