Update bar visualizer design (#17) #72

Job	Run time
run_all_tests (macos-13, 14.2, iOS Simulator,OS=17.2,name=iPhone 14 Pro)	6m 26s
run_all_tests (macos-13, 14.2, macOS)	3m 53s
run_all_tests (macos-13, 14.2, macOS,variant=Mac Catalyst)	4m 51s
run_all_tests (macos-14, 15.4, iOS Simulator,OS=17.5,name=iPhone 15 Pro)	1m 41s
run_all_tests (macos-14, 15.4, macOS)	1m 32s
run_all_tests (macos-14, 15.4, macOS,variant=Mac Catalyst)	1m 16s
run_all_tests (macos-14, 15.4, visionOS Simulator,name=Apple Vision Pro)	1m 26s
run_all_tests (macos-14, 15.4, tvOS Simulator,name=Apple TV)	1m 23s
run_all_tests (macos-15, 16.1, iOS Simulator,OS=18.1,name=iPhone 16 Pro)	1m 42s
run_all_tests (macos-15, 16.1, macOS)	2m 11s
run_all_tests (macos-15, 16.1, macOS,variant=Mac Catalyst)	1m 35s
	27m 56s

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