Use `Table::id_salt` on `ScrollArea` #13073

Job	Run time
Check wasm32 + wasm-bindgen	2m 31s
Format + check + test	5m 38s
android	22s
Check wasm32+atomics	1m 28s
cargo-deny aarch64-apple-darwin	37s
cargo-deny aarch64-linux-android	39s
cargo-deny i686-pc-windows-gnu	42s
ios	22s
cargo-deny i686-pc-windows-msvc	41s
cargo-deny i686-unknown-linux-gnu	39s
cargo-deny wasm32-unknown-unknown	36s
cargo-deny x86_64-apple-darwin	37s
Check Windows	1m 44s
cargo-deny x86_64-pc-windows-gnu	40s
cargo-deny x86_64-pc-windows-msvc	47s
cargo-deny x86_64-unknown-linux-gnu	38s
cargo-deny x86_64-unknown-linux-musl	39s
cargo-deny x86_64-unknown-redox	39s
	19m 59s

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