Content Not Refreshed Correctly when Modifying Pasted Content in Callbacks

[chadrschroeder]

Fixes #1103.

When pasting plain text content or a URL, if you modify the content in a trix-change or trix-paste callback, the changes aren't reflected in the editor after the paste is finished. The changes are reflected later if you start to type in the editor.

This pull request updates how the render is performed to match other areas like this.

[danielnc]

Bump to see what are the plans to get this merged and/or a workaround based on issue #1103