revert: pkg/tui lean-mode machinery from #3724 #8119

Job	Run time
license-check	48s
lint	3m 40s
build-image (linux/arm64, ubuntu-24.04-arm)	4m 10s
build-and-test	5m 6s
build-image (linux/amd64, ubuntu-latest)	4m 23s
build-and-push-image	0s
merge-and-push-template	0s
merge-and-push-image	0s
	18m 7s

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