[feat] Webview::navigate borrows &self instead of &mut self

[WSH032]

Describe the problem

tauri/crates/tauri/src/webview/mod.rs

Lines 1266 to 1269 in 72748cc

	/// Navigates the webview to the defined url.
	pub fn navigate(&mut self, url: Url) -> crate::Result<()> {
	self.webview.dispatcher.navigate(url).map_err(Into::into)
	}

Currently, Webview::navigate borrows &mut self, but its underlying implementation tauri_runtime::WebviewDispatch::navigate only requires an immutable borrow &self.

Is there any specific reason why tauri::Webview needs to do this? If not, can we change it to only require an immutable borrow &self?

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Why don't I want &mut self?

I am implementing Python bindings for Webview::navigate in pytauri: WSH032/pytauri#46.

Python is multithreaded, and when implementing pyo3 bindings for a Rust struct, if at least one method requires &mut self, we have to add a thread lock, which degrades performance.

As of now, except for navigate, other methods of Webview only require &self, and I don't want to add a thread lock just for only one method.

Describe the solution you'd like

just change WebviewWindow::navigate and Webview::navigate to &self.

Alternatives considered

None

Additional context

pyo3/Bound and interior mutability