[Feat]: Show Toolbar on Table component when there is an Empty Table

[adnanqaops]

Is your feature request related to a problem? Please describe.
This feature is from UX perspective. A User has shared a scenario where if all the Columns of a Table are de-selected, then we are showing an Empty Table. But, there is no option to revert back to select some Columns of the Table. So, on de-selecting all the columns of the Table, we should show the Toolbar on Empty table, so that User can select back some columns from Column Visibility feature.

Here's the link to the Discord thread, where we had a discussion with User.

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