Escape keypress in Multiselect that's in a dialog causes the dialog to close

[bvandercar-vt]

Environment

• Package version(s): 5.x
• Operating System: All
• Browser name and version: All

Code Sandbox

Link to a minimal repro (fork this code sandbox):

Steps to reproduce

1. Have a MultiSelect in a dialog
2. Bring focus to the MultiSelect combobox tag input
3. Hit escape key
4. MultiSelect combobox list of items should close, but the whole dialog closes

Actual behavior

Whole dialog closes on escape key.

Expected behavior

Only MultiSelect menu closes on escape key.

Possible solution

Working on PR