fix: channel callback never cleaned up from window

[Legend-Master]

Fix #13133

Also:

• added a feature that allows passing the callback as the parameter of constructor of Channel so you can use it like this new Channel((message) => console.log(message))
• only go through the fetch process if the data is large enough for it to be faster

[github-actions]

Package Changes Through 7431e00

There are 3 changes which include @tauri-apps/api with minor, tauri with minor, tauri-runtime with minor

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
@tauri-apps/api	2.4.1	2.5.0
tauri-runtime	2.5.1	2.6.0
tauri-runtime-wry	2.5.1	2.5.2
tauri	2.4.1	2.5.0

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[Legend-Master]

This change will require syncing the version of rust crate tauri and js package @tauri-apps/api, since this is marked as a minor I think we can do this right?

[FabianLars]

hmm, yeah. we've communicated that minor versions are synced a few times (even if we don't fully follow it) so it should be fine. not the first time in 2.x either 🤷