ella: downloadFile method not working on safari ios

[Ishitasinha7089]

We are creating an anchor tag and setting its target to _blank and we are performing click action via javascript. Safari on ios is assuming it as a popup and is blocking it, it works when Block Popup is turned off.
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Can we add check for Safari to avoid link.target='_blank, and then the file will open on same tab. One issue with this solution is that, on ios Safari and Chrome have same userAgents so it will be difficult to differentiate between them.