RichTextArea requestLayout by inline node doesn't reach VFlow

[Jurgen Doll]

Hi Andy

When an INLINE_NODE in RichTextArea is updated and it triggers
requestLayout then the request doesn't propagate all the way up to VFlow
but stops when it reaches TextCell.

So if for example a Label is selected, say via a double click, and its
text changes then the Label updates but the RichTextArea selection doesn't.

If you want a demo of the problem see either of the two demo's on https://github.com/Jugen/RichTextAreaTest

Thanks, regards
Jurgen