perf: make url crate optional for wasm32 targets

Move the `url` crate dependency from main dependencies to a target-specific
dependency for non-wasm32 platforms. The `url` crate is only needed for the
`to_file_path()` method which doesn't work on wasm32 (no filesystem concept).

This reduces the dependency footprint for wasm32 builds where the `url` crate
cannot be used anyway.

Changes:
- Remove `url = "2"` from main dependencies
- Add `url = "2"` under `[target.'cfg(not(target_arch = "wasm32"))'.dependencies]`

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: Boshen

Cargo.toml

@@ -88,12 +88,14 @@ serde_json = { version = "1", features = ["preserve_order"] } # preserve_order:
 simdutf8 = { version = "0.1" }
 thiserror = "2"
 tracing = "0.1"
-url = "2"
 
 pnp = { version = "0.12.2", optional = true }
 
 document-features = { version = "0.2.11", optional = true }
 
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+url = "2"
+
 [target.'cfg(any(target_os = "macos", target_os = "linux"))'.dependencies]
 libc = "0.2"