Add `enable_wasm_sdk_build: true` to `pull_request.yml` #37

Job	Run time
Benchmark	4m 41s
Test / Linux (nightly-main - jammy)	2m 12s
Test / Swift SDK for Wasm Build (nightly-6.2 - jammy)	1m 23s
Test / Swift SDK for Wasm Build (6.2 - jammy)	1m 21s
Test / Linux (6.1 - jammy)	1m 58s
Test / Swift SDK for Wasm Build (nightly-main - jammy)	1m 37s
Test / Linux (6.0 - jammy)	2m 4s
Test / Linux (nightly-6.2 - jammy)	2m 16s
Test / Linux (6.2 - jammy)	1m 49s
Soundness / License headers check	7s
Soundness / API breakage check	1m 39s
Soundness / Documentation check	53s
Soundness / Broken symlinks check	5s
Soundness / Shell check	54s
Test / Windows (${{ matrix.swift_version }} - windows-2022)	0s
Soundness / Python lint check	10s
Test / Embedded Swift SDK for Wasm Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Test / Static Linux Swift SDK Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Soundness / YAML lint check	4s
Test / macOS (Xcode ${{ matrix.xcode_version }} - ${{ matrix.os_version }} - ${{ matrix.arch }})	0s
Soundness / Unacceptable language check	0s
Soundness / Format check	0s
	23m 13s

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