fix: array widget sort #13298

Job	Run time
Core Basic (18.x)	8m 14s
Core Blocks (18.x)	9m 15s
Core Basic (20.x)	6m 35s
Core Blocks (20.x)	7m 34s
Core Content (18.x)	3m 33s
Core Control Panels (18.x)	3m 56s
Core Content (20.x)	3m 21s
Core Control Panels (20.x)	3m 52s
Core Basic - Plone 5 (18.x)	7m 0s
Core Blocks - Listing (18.x)	5m 49s
Core Blocks - Listing (20.x)	5m 51s
Coresandbox (18.x)	3m 57s
Core Volto Slate (18.x)	8m 9s
Project Generator (18.x)	5m 25s
Core Volto Slate (20.x)	7m 52s
Multilingual (18.x)	4m 4s
Project Generator (20.x)	6m 49s
Multilingual in Seamless Mode (18.x)	4m 2s
Seamless Mode (18.x)	7m 11s
Working Copy (18.x)	3m 21s
	1h 55m 50s

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