[controls/formlayout] Don't attempt to reset implicitWidth
Summary:
When a FormLayout is in wide mode, it attempts to
reset the implicitWidth of a GridLayout by assigning undefined to it.
This doesn't work because:
- Layouts provide their own implicit width
- You can't reset an implicit size with undefined, hence the error messages obtained from trying to do so
Reviewers: Kirigami, ngraham
Reviewed By: Kirigami, ngraham
Subscribers: ngraham, plasma-devel
Tags: Kirigami
Differential Revision: https://phabricator.kde.org/D28318