Improving ComboBoxColumn behavior to prevent triple click behavior #4220
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Fixes #3161
This implementation fixes the need to click a ComboBox in a DataGridComboBoxColumn 3 times before the DropDown opens.
PR Type
What kind of change does this PR introduce?
What is the current behavior?
The current behavior is that in order to expand a ComboBox DropDown, the cell must first be clicked once to be highlighted, then the ComboBox must be clicked twice more before the DropDown expands.
For more information, see: #3161
What is the new behavior?
The new behavior is that after the ComboBox is clicked once to be highlighted, the next click expands the DropDown.
PR Checklist
Please check if your PR fulfills the following requirements:
Other information
Supersedes #4209