ui.box, ui.table: respect parent hint size min

ui.box, ui.table: respect parent hint size min

Summary:
This patch fixes issue that parent hint size min is ignored when it is greater
than children hint size min sum.

Thanks to segfaultxavi for reporting this.

Test Plan:
1. make check
2. 'hello-gui' or 'texteditor' example in examples.git

Reviewers: segfaultxavi, zmike

Reviewed By: segfaultxavi

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D8098