fix(LightRegularGrid): wrong save viewable #130

Job	Run time
test / prepare / prepare	19s
test / checkers	44s
test / test-repository / test-python (ubuntu-latest)	57s
test / test-repository / test-python (windows-latest)	1m 54s
test / test-repository / test-npm (windows-latest)	2m 16s
test / semantic-commit / semantic-commit	25s
test / test-repository / test-npm (ubuntu-latest)	16s
test / test-repository / test-docker	0s
test / release / release	5s
test / deploy-repository / release-npm	15s
test / deploy-repository / release-python	31s
test / deploy-repository / release-docker	0s
test / deploy-repository / notify / notify	5s
	7m 47s

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