fix widgets import (#2353) #5216

Job	Run time
build_treon (macos-12, 3.10) / build_treon	8m 0s
build_treon (macos-12, 3.9) / build_treon	8m 56s
build_treon (macos-12, 3.8) / build_treon	2m 50s
build_treon (macos-12, 3.11) / build_treon	7m 35s
build_treon (ubuntu-20.04, 3.10) / build_treon	5m 13s
build_treon (ubuntu-20.04, 3.8) / build_treon	2m 16s
build_treon (ubuntu-20.04, 3.9) / build_treon	5m 21s
build_treon (ubuntu-20.04, 3.11) / build_treon	5m 30s
build_treon (windows-2019, 3.10) / build_treon	12m 15s
build_treon (windows-2019, 3.11) / build_treon	12m 15s
build_treon (windows-2019, 3.9) / build_treon	9m 17s
build_treon (windows-2019, 3.8) / build_treon	3m 32s
	1h 23m 0s

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