[bug] IPC fails in non-http protocol windows

[luoffei]

Describe the bug

When a window is created using a non-http protocol (data:text/html,) the value of Origin is empty when calling the rust backend command. However, Origin is required when parsing the call request.

tauri/crates/tauri/src/ipc/protocol.rs

Lines 503 to 511 in 7a1a327

	let url = Url::parse(
	parts
	.headers
	.get("Origin")
	.ok_or("missing Origin header")?
	.to_str()
	.map_err(|_| "Origin header value must be a string")?,
	)
	.map_err(|_| "Origin header is not a valid URL")?;

Reproduction

Create a window using a non-http protocol (data:text/html,)

let data_url = Url::parse("data:text/plain,Hello?World#").unwrap();
let _ = tauri::WebviewWindowBuilder::new(&app_handle, "example", tauri::WebviewUrl::CustomProtocol(data_url)).build();

Then the front end calls the rust backend command

const {open} = window.__TAURI__.shell;
open("https://github.com");

Expected behavior

No response

Full tauri info output

[✔] Environment
    - OS: Windows 10.0.22635 x86_64 (X64)
    ✔ WebView2: 130.0.2849.52
    ✔ MSVC: Visual Studio Community 2022
    ✔ rustc: 1.82.0 (f6e511eec 2024-10-15)
    ✔ cargo: 1.82.0 (8f40fc59f 2024-08-21)
    ✔ rustup: 1.27.1 (54dd3d00f 2024-04-24)
    ✔ Rust toolchain: stable-x86_64-pc-windows-msvc (environment override by RUSTUP_TOOLCHAIN)
    - node: 16.20.2
    - pnpm: 8.14.0
    - npm: 8.19.4

[-] Packages
    - tauri 🦀: 2.0.6
    - tauri-build 🦀: 2.0.2
    - wry 🦀: 0.46.2
    - tao 🦀: 0.30.3
    - tauri-cli 🦀: 2.0.1

[-] Plugins
    - tauri-plugin-fs 🦀: 2.0.2
    - tauri-plugin-autostart 🦀: 2.0.1
    - tauri-plugin-shell 🦀: 2.0.2
    - tauri-plugin-process 🦀: 2.0.1
    - tauri-plugin-single-instance 🦀: 2.0.1
    - tauri-plugin-notification 🦀: 2.0.1
    - tauri-plugin-http 🦀: 2.0.2

[-] App
    - build-type: bundle
    - CSP: unset
    - frontendDist: ../ui/dist
    - devUrl: http://localhost:8081/

Stack trace

No response

Additional context

No response