Fix: Selectable whether to support IME #12889

Job	Run time
android	22s
cargo-deny aarch64-apple-darwin	35s
Check wasm32 + wasm-bindgen	2m 18s
cargo-deny aarch64-linux-android	36s
cargo-deny i686-pc-windows-gnu	36s
cargo-deny i686-pc-windows-msvc	38s
Check wasm32+atomics	1m 18s
cargo-deny i686-unknown-linux-gnu	38s
Format + check + test	5m 19s
cargo-deny wasm32-unknown-unknown	38s
ios	25s
cargo-deny x86_64-apple-darwin	38s
Check Windows	2m 14s
cargo-deny x86_64-pc-windows-gnu	36s
cargo-deny x86_64-pc-windows-msvc	38s
cargo-deny x86_64-unknown-linux-gnu	37s
cargo-deny x86_64-unknown-linux-musl	37s
cargo-deny x86_64-unknown-redox	42s
	19m 25s

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