If this happens often in practice, rework flow so that when matchmaking room is full and all connections are alive

[github-actions]

then have the final connection hand-off be concurrently run without needing to be awaited.

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bones/other_crates/bones_matchmaker/src/matchmaking.rs

Lines 112 to 119 in 2f4e7ac

	// Send error if room is still full
	// TODO: If this happens often in practice, rework flow so that when matchmaking room is full and all connections are alive
	// then have the final connection hand-off be concurrently run without needing to be awaited.
	if !can_join {
	info!(
	"[{}] Matchmaking room is full after waiting, rejecting request",
	stable_id

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This issue was generated by todo-issue based on a TODO comment in 2f4e7ac.