dcc: refactor input #251

Job	Run time
Detect Relevant Path Changes	5s
Build Dash Package	3m 10s
Typing Tests	2m 40s
Table Server Tests (Group 3)	13m 59s
Table Unit/Lint Tests (Python 3.12)	1m 44s
Table Server Tests (Group 2)	14m 25s
Table Server Tests (Group 1)	14m 45s
Run Background & Async Callback Tests (Python ${{ matrix.python-version }})	0s
	50m 48s

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