Fix left padding for ComboBox inside Grid editor (#16838)
Fix left padding for ComboBox inside Grid editor (#16838)

This fix applies especially to the themes Base, Chameleon and Runo.
Reindeer and Valo were already covered by earlier changes.

Filed #19407 for fixing incorrect positioning of DateField button in
Base theme.

Change-Id: Iefda0d23b93c74274ad83c60907c0198e5c2f237
kironapublic/vaadin,mstahv/framework,Legioth/vaadin,Darsstar/framework,asashour/framework,kironapublic/vaadin,asashour/framework,peterl1084/framework,peterl1084/framework,kironapublic/vaadin,Legioth/vaadin,jdahlstrom/vaadin.react,kironapublic/vaadin,kironapublic/vaadin,mstahv/framework,mstahv/framework,jdahlstrom/vaadin.react,peterl1084/framework,Legioth/vaadin,asashour/framework,asashour/framework,jdahlstrom/vaadin.react,Darsstar/framework,jdahlstrom/vaadin.react,Legioth/vaadin,Darsstar/framework,Darsstar/framework,asashour/framework,Darsstar/framework,Legioth/vaadin,peterl1084/framework,mstahv/framework,jdahlstrom/vaadin.react,mstahv/framework,peterl1084/framework