Emoji picker example improvements #2690

Job	Run time
cargo clippy (windows-latest)	4m 27s
cargo check (msrv) (wasm32)	14s
cargo check (msrv) (windows-latest)	1m 27s
cargo clippy (macos-latest)	2m 48s
cargo clippy (ubuntu-latest)	3m 14s
cargo check (msrv) (macos-latest)	38s
cargo check (aarch64-android)	21s
cargo clippy (wasm32)	2m 1s
cargo check (msrv) (ubuntu-latest)	36s
cargo doc	42s
formatting	11s
cargo test (wasm32)	18s
Prime LFS Cache	6s
typos	3s
cargo test (windows-latest)	3m 20s
cargo test (macos-latest)	1m 46s
cargo test (ubuntu-latest)	3m 18s
	25m 30s

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