Make the SpaceRoomListProxy publish its SpaceRoomProxy updates. (#4607)

Also removes an unused `parent` parameter that was missed when removing the parent name and includes some regenerated snapshots that were missed in the last PR.

PreviewTests/Sources/__Snapshots__/PreviewTests/leaveSpaceRoomDetailsCell.iPad-en-GB-0.png

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PreviewTests/Sources/__Snapshots__/PreviewTests/leaveSpaceRoomDetailsCell.iPad-pseudo-0.png

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PreviewTests/Sources/__Snapshots__/PreviewTests/leaveSpaceRoomDetailsCell.iPhone-16-en-GB-0.png

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PreviewTests/Sources/__Snapshots__/PreviewTests/leaveSpaceRoomDetailsCell.iPhone-16-pseudo-0.png

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