Group view alert icon not updating

There are two problems:

• (low priority) qtAttributeView resizes the alert column when data is entered on item.
• qtGroupView doesn't hide tab's alert icon when attribute is updated to valid state.

To demonstrate in modelbuilder:

• Load the attached test-alerts.sbt file.
• In the "Rectangle" tab, click "New" to create an attribute.
• At the bottom of the tab, click on the first value in the "LowerCoord" item and enter 0 then <Enter>.

Problem 1: the first column in the attribute list resizes to a way-too-big value.

Continuing from there:

• Enter values (e.g. 0) in all 4 items. From the first LowerCoord value, enter 0, tab to next field, enter 0, and so forth.
• Tab out of the last field and verify that the alert icon next to the attribute clears.

Problem 2: the tab labeled "Rectangle" still displays an alert icon.