Make MutableHandle::new pub(crate) #206

Job	Run time
elevated	0s
normal / android	6m 54s
normal / integrity	35s
normal / linux (debugmozjs)	12m 28s
normal / linux (aarch64-unknown-linux-gnu)	12m 46s
normal / linux ("")	11m 2s
normal / linux (armv7-unknown-linux-gnueabihf)	11m 45s
normal / mac (debugmozjs, aarch64-apple-darwin, macos-14)	9m 38s
normal / OpenHarmony (aarch64-unknown-linux-ohos)	9m 36s
normal / OpenHarmony (x86_64-unknown-linux-ohos)	9m 21s
normal / mac (debugmozjs, x86_64-apple-darwin, macos-13)	14m 13s
normal / windows (debugmozjs, x86_64-pc-windows-msvc)	19m 1s
normal / mac ("", aarch64-apple-darwin, macos-14)	8m 19s
normal / windows (debugmozjs, aarch64-pc-windows-msvc)	14m 18s
normal / mac ("", x86_64-apple-darwin, macos-13)	12m 58s
normal / windows ("", x86_64-pc-windows-msvc)	13m 27s
normal / windows ("", aarch64-pc-windows-msvc)	13m 44s
normal / Check version and publish release	14s
normal / Verify release / Verify archive OpenHarmony (aarch64-unknown-linux-ohos)	1m 13s
normal / Verify release / verify-archive (aarch64-apple-darwin, macos-14)	1m 6s
normal / Verify release / Verify archive OpenHarmony (x86_64-unknown-linux-ohos)	1m 14s
normal / Verify release / verify-archive (x86_64-apple-darwin, macos-13)	2m 3s
normal / Verify release / verify-archive (x86_64-unknown-linux-gnu, ubuntu-latest)	1m 8s
normal / Verify release / verify-archive (x86_64-pc-windows-msvc, windows-latest)	3m 15s
normal / Result	1s
Result	1s
	3h 10m 20s

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