Copy text with left or right alignment from one ck editor instance to another does not preserve alignment

[zoarif]

Steps to reproduce

1. Open the demo page for ckeditor in two tabs in the browser.
2. In first tab, Go to document editor and left align the text

"This letter acknowledges the invaluable input you, as a member of our Innovation Team"

3. Copy this text and paste it in the second tab with ck editor demo page. The text will be pasted as normal text with no alignment.

Expected result

The alignment should be preserved and the text should be right aligned.

Actual result

The text is always pasted as left aligned or normal text.

Other details (browser, OS, CKEditor version, installed plugins)

Happens in all browsers

[Jakub Ś]

This is a duplicate of #14391 and #14406