Fix doc_id type in begin_tile

[messense]

No description provided.

[Copilot]

Pull request overview

This PR fixes the type of the doc_id parameter in the begin_tile method from Option<NonZero<i32>> to i32 to match the FFI layer's expectations.

• Changed the doc_id parameter type from Option<NonZero<i32>> to i32 in all begin_tile method signatures
• Updated call sites to pass doc_id as a plain i32 instead of wrapping it with NonZero::new() or using .map_or()

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/device/native.rs	Updated begin_tile method signature in the NativeDevice trait and its implementations for Box<T> and Rc<RefCell<T>>, and updated the FFI bridge to pass doc_id as plain i32
src/device.rs	Updated begin_tile method signature and removed the map_or() call when passing doc_id to the FFI function

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[ginnyTheCat]

Hm, I'm not quite sure what the intention is. I think they would want doc_ids to start at 1 since the JS docs mention that doc_ids of zero are used to indicate no caching (like it is for id). If that's the case than using NonZero would be correct already. But currently it seems to me like the first document would not be cached.

Maybe it's worth opening an issue against mupdf to ask about this oddity?