web: improve owner check #4243

Job	Run time
Typecheck	1m 24s
Detect Changes	9s
Lint (Biome)	14s
Format (Biome)	6s
Format (Cargo)	10s
Build Desktop (x86_64-pc-windows-msvc, windows-latest)	8m 13s
Build Desktop (aarch64-apple-darwin, macos-latest)	3m 16s
Clippy	0s
Verify Tauri plugin versions	0s
	13m 32s

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