fix lowering results for async exports #2645

Job	Run time
Rustfmt	13s
Build wit-bindgen (x86_64-linux, ubuntu-latest)	1m 44s
Check	2m 6s
Build wit-bindgen (x86_64-macos, macos-latest, x86_64-apple-darwin)	1m 38s
Test (ubuntu-latest, c)	4m 36s
Build wit-bindgen (aarch64-macos, macos-latest, aarch64-apple-darwin)	1m 43s
Crate Unit Tests	1m 11s
Test (ubuntu-latest, rust)	2m 25s
Build wit-bindgen (x86_64-windows, windows-latest)	4m 4s
verify-publish	2m 3s
Test (ubuntu-latest, teavm-java)	5m 28s
Build wit-bindgen (aarch64-linux, ubuntu-latest, aarch64-unknown-linux-gnu)	2m 7s
Test (ubuntu-latest, go)	5m 41s
Test (ubuntu-latest, csharp)	7m 43s
Test (macos-latest, c)	6m 20s
Test (macos-latest, rust)	3m 0s
Test (macos-latest, teavm-java)	6m 3s
Test (macos-latest, go)	6m 43s
Test (macos-latest, csharp)	7m 36s
Test (windows-latest, c)	9m 43s
Test (windows-latest, rust)	6m 16s
Test (windows-latest, teavm-java)	12m 23s
Test (windows-latest, go)	11m 10s
Test (windows-latest, csharp)	19m 8s
Record the result of testing and building steps	1s
	2h 11m 5s

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