Revert "Introduce global `viewer/!sync-state` (#697)" #5282

Job	Run time
clj-kondo	8s
build-and-upload-viewer-resources	1m 58s
test (macos-latest, bash)	2m 52s
test (ubuntu-latest, bash)	1m 6s
test (windows-latest, powershell)	1m 32s
SSR smoke test build	0s
static-build	0s
ui-tests	0s
deploy	0s
	7m 36s

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