chore: remove --cfg docsrs to fix docs.rs builds

[FabianLars]

this worked in tao but i forgot to include it in tauri for 2.9

[github-actions]

Package Changes Through f4e96f3

There are 5 changes which include tauri with patch, tauri-build with patch, tauri-plugin with patch, tauri-runtime with patch, tauri-runtime-wry with patch

Planned Package Versions

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

package	current	next
tauri-runtime	2.9.0	2.9.1
tauri-runtime-wry	2.9.0	2.9.1
tauri-plugin	2.5.0	2.5.1
tauri-build	2.5.0	2.5.1
tauri	2.9.0	2.9.1

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[FabianLars]

tested in a local docs.rs environment.