Gate synchronous future/stream read/write separately

[alexcrichton]

This commit renames the previous wasm_component_model_async_builtins feature to wasm_component_model_more_async_builtins and then moves synchronous future/stream reads/writes behind this feature. This is inspired by #13212 and corresponds to WebAssembly/component-model#641 plus bytecodealliance/wasm-tools#2507.

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[alexcrichton]

This now pulls in an update-to wasm-tools and should be good to go modulo CI/review

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