fix: broken `Suspense` when a resource loads immediately (closes #1805) #891

Job	Run time
get-leptos-changed / Detect Source Change	9s
CI (integrations/actix) / Run ci (nightly)	16m 11s
CI (integrations/axum) / Run ci (nightly)	19m 33s
CI (integrations/utils) / Run ci (nightly)	17m 13s
CI (integrations/viz) / Run ci (nightly)	20m 33s
CI (leptos) / Run ci (nightly)	1h 10m 49s
CI (leptos_config) / Run ci (nightly)	21m 27s
CI (leptos_dom) / Run ci (nightly)	31m 15s
CI (leptos_hot_reload) / Run ci (nightly)	22m 15s
CI (leptos_macro) / Run ci (nightly)	28m 31s
CI (leptos_reactive) / Run ci (nightly)	38m 15s
CI (leptos_server) / Run ci (nightly)	33m 27s
CI (meta) / Run ci (nightly)	16m 50s
CI (router) / Run ci (nightly)	17m 57s
CI (server_fn) / Run ci (nightly)	19m 12s
CI (server_fn_macro) / Run ci (nightly)	19m 1s
CI (server_fn/server_fn_macro_default) / Run ci (nightly)	20m 36s
	6h 53m 14s

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