Bugfix: address dcc dropdown feedback #595

Job	Run time
Build Dash Package	3m 14s
Detect Relevant Path Changes	4s
Typing Tests	3m 0s
Run Background & Async Callback Tests (Python ${{ matrix.python-version }})	0s
Table Unit/Lint Tests (Python ${{ matrix.python-version }})	-1s
Table Server Tests (Group ${{ matrix.test-group }})	-1s
	6m 16s

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