gpui: Don’t hide `Window` in docs #44428

Job	Run time
(macOS) Run Clippy and tests	19s
(Linux) Build Remote Server	1m 8s
(Linux) Run Clippy and tests	1m 48s
Check Postgres and Protobuf migrations, mergability	14s
Check formatting and spelling	50s
(Windows) Run Clippy and tests	4m 59s
Create a macOS bundle	0s
Linux x86_x64 release bundle	0s
Linux arm64 release bundle	0s
Auto release preview	0s
	9m 18s

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