Expanding adornments don't update in real time in GtTranscript

[botwhytho]

Visual elements show up if the transcript element is removed and added back to the scene graph (by moving to another Gt tab and back, or similar actions). The issue lies in GtTranscript>>#insertString:withAttributesForWholeString:withAttributesAtTheEnd:as the announcement sent doesn't include the expanding attributes:

(GtTranscriptInsertStringAnnouncement new 
			string: aString; 
			attributes: aCollection)

Simply adding those attributes makes this work.

(GtTranscriptInsertStringAnnouncement new 
			string: aString; 
			attributes: aCollection , aCollection2)

Before vs After:

GtTranscriptAnnouncementError.mp4

[refactoringdr]

Thanks for the fix.