Add `wasm32` support to the rust sdk (updated) #20315

Job	Run time
Lints	2m 35s
Check CI command docs	1m 0s
Test spacetimedb-update flow (aarch64-unknown-linux-gnu)	50s
Check that packages are publishable	27s
Check for Python smoketest edits	11s
Check CLI docs	3m 41s
Build and test wasm bindings	4m 43s
Verify global.json files are symlinks	1m 34s
Test spacetimedb-update flow (x86_64-pc-windows-msvc)	6m 23s
Check smoketests/mod.rs is complete	4m 15s
Test spacetimedb-update flow (aarch64-apple-darwin)	2m 34s
Test spacetimedb-update flow (x86_64-unknown-linux-gnu)	1m 48s
Unreal Engine Tests	-1s
Verify LLM benchmark is up to date	-1s
Internal Tests	-1s
unity-testsuite	-1s
Test Suite	-1s
csharp-testsuite	-1s
Smoketests (${{ matrix.name }})	-1s
	29m 54s

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