feat: Fully reload ui/server when autoreload occurs #2760

Job	Run time
website / pkgdown	2m 35s
R-CMD-check / setup	44s
routine / routine	4m 26s
R-CMD-check / macOS-latest (4.4.2)	3m 57s
R-CMD-check / windows-latest (4.4.2)	4m 15s
R-CMD-check / ubuntu-latest (devel)	6m 56s
R-CMD-check / ubuntu-latest (4.4.2)	5m 26s
R-CMD-check / ubuntu-latest (4.3.3)	5m 27s
R-CMD-check / ubuntu-latest (4.2.3)	5m 53s
R-CMD-check / ubuntu-latest (4.1.3)	5m 49s
R-CMD-check / ubuntu-latest (4.0.5)	5m 37s
	51m 5s

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