Add `ShowLabels` component, which controls whether instances’ labels are shown. #8436

Job	Run time
Checks / Test Python Docs	27s
Checks / Python lints (ruff, mypy, …)	35s
Checks / Check if running codegen would produce any changes	2m 0s
Checks / C++ formatting check	3m 57s
Checks / C++ tests	10m 59s
Checks / Rerun lints	27s
Checks / Rust lints (fmt, check, clippy, tests, doc)	12m 8s
Checks / Spell Check	5s
Python / Build Wheels	2m 16s
	32m 54s

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