Please describe the feature you have in mind and explain what the current shortcomings are?

The left pane in many tabs (Overview, Products) is missing the same functionality of expanding or collapsing children available in the middle pane.

Additional context:

This issue was automatically created from AYON ticket YN-0177

You can hold option when clicking the expand button to expand/collapse all it's children.

The "left pane" they are talking about is the "slicer". Add this same behaviour to the SimpleTable component (slicer uses it).

When simple table is "expandable":

• Add context menu items for expanding and collapsing all children
• Add key modifier option to clicking the expand button to expand/collapse all children.