fix: correctly quote spread attributes in `{..attrs}` syntax (fixes #1826) #932

Job	Run time
get-leptos-changed / Detect Source Change	12s
CI (integrations/actix) / Run ci (nightly)	16m 49s
CI (integrations/axum) / Run ci (nightly)	20m 42s
CI (integrations/utils) / Run ci (nightly)	15m 1s
CI (integrations/viz) / Run ci (nightly)	16m 13s
CI (leptos) / Run ci (nightly)	1h 19m 19s
CI (leptos_config) / Run ci (nightly)	18m 29s
CI (leptos_dom) / Run ci (nightly)	29m 31s
CI (leptos_hot_reload) / Run ci (nightly)	14m 40s
CI (leptos_macro) / Run ci (nightly)	26m 52s
CI (leptos_reactive) / Run ci (nightly)	50m 4s
CI (leptos_server) / Run ci (nightly)	30m 28s
CI (meta) / Run ci (nightly)	23m 30s
CI (router) / Run ci (nightly)	17m 39s
CI (server_fn) / Run ci (nightly)	15m 55s
CI (server_fn_macro) / Run ci (nightly)	15m 23s
CI (server_fn/server_fn_macro_default) / Run ci (nightly)	14m 45s
	6h 45m 32s

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