Optimize object property access for StaticString keys #1121

Job	Run time
Build for native target (macos-12, Xcode_14.0)	47s
Build and Test (macos-12, wasm-5.9.1-RELEASE, Node, Xcode_13.4.1.app)	5m 16s
Build for native target (macos-13, Xcode_14.3)	1m 7s
Build and Test (macos-13, wasm-5.9.1-RELEASE, Node, Xcode_14.3.app)	5m 37s
Build for native target (macos-14, Xcode_15.2)	17s
Build and Test (macos-14, wasm-5.9.1-RELEASE, Node, Xcode_15.2.app)	1m 57s
Build and Test (ubuntu-22.04, wasm-5.9.1-RELEASE, Node)	1m 48s
Build and Test (ubuntu-22.04, wasm-5.10.0-RELEASE, Node)	1m 50s
Build and Test (ubuntu-20.04, wasm-5.7.3-RELEASE, Node)	1m 30s
Build and Test (ubuntu-20.04, wasm-5.8.0-RELEASE, Node)	1m 34s
Build and Test (ubuntu-20.04, wasm-5.7.3-RELEASE, MicroWASI)	1m 23s
Build and Test (ubuntu-20.04, wasm-5.8.0-RELEASE, MicroWASI)	1m 24s
Build and Test (ubuntu-20.04, wasm-5.9.1-RELEASE, MicroWASI)	1m 50s
Build and Test (ubuntu-22.04, DEVELOPMENT-SNAPSHOT-2024-05-01-a, DEVELOPMENT-SNAPSHOT-2024-05-25-...	2m 6s
Build and Test (ubuntu-22.04, DEVELOPMENT-SNAPSHOT-2024-05-01-a, DEVELOPMENT-SNAPSHOT-2024-05-25-...	2m 10s
	30m 36s

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