bug: [Popup] doesn't take into account popper's attributes, only styles

[vkramskikh]

Bug Report

state.attributes.popper aren't applied to the popup wrapper div, only state.styles.popper are.

Steps

1. Use Popup component with default props and modifiers (which include hide by default) and on="click".
2. Open the popup by clicking the trigger.
3. Scroll the trigger out of the viewport.

Expected Result

The popup wrapper div gets the attributes data-popper-escaped and data-popper-reference-hidden from the default hide modifier.

Actual Result

No attributes are added to the div.

Version

2.1.5