add `OnceLockExt` extension trait to help initialize `OnceLock` #11076

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11 errors

The job was canceled because "stable_macos-14_arm64_aar" failed.

`cargo clippy --no-default-features --all-targets --workspace -- --deny=warnings` failed

`cargo clippy --no-default-features --features=abi3 --all-targets --workspace -- --deny=warnings` failed

`cargo clippy --features=full multiple-pymethods --all-targets --workspace -- --deny=warnings` failed

`cargo clippy --features=abi3 full multiple-pymethods --all-targets --workspace -- --deny=warnings` failed

`cargo clippy --no-default-features --all-targets --workspace -- --deny=warnings` failed

`cargo clippy --no-default-features --features=abi3 --all-targets --workspace -- --deny=warnings` failed

`cargo clippy --features=full multiple-pymethods --all-targets --workspace -- --deny=warnings` failed

`cargo clippy --features=abi3 full multiple-pymethods --all-targets --workspace -- --deny=warnings` failed

`cargo clippy --no-default-features --all-targets --workspace -- --deny=warnings` failed

`cargo clippy --no-default-features --features=abi3 --all-targets --workspace -- --deny=warnings` failed