fix: revert macos-private-api to base tauri dependency

Splitting macos-private-api to the macOS-only Cargo section broke
tauri-build on non-macOS CI. The feature validates against the
macOSPrivateApi config flag and tauri-build rejects the mismatch.
Tauri 2 safely guards all private API code behind #[cfg(target_os = "macos")],
so keeping it in the base dep is harmless on Windows/Linux.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: Isaccseven

src-tauri/Cargo.toml

@@ -21,7 +21,7 @@ crate-type = ["staticlib", "cdylib", "rlib"]
 tauri-build = { version = "2", features = [] }
 
 [dependencies]
-tauri = { version = "2", features = ["tray-icon"] }
+tauri = { version = "2", features = ["macos-private-api", "tray-icon"] }
 tauri-plugin-opener = "2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
@@ -36,5 +36,4 @@ tauri-plugin-global-shortcut = "2"
 
 
 [target."cfg(target_os = \"macos\")".dependencies]
-tauri = { version = "2", features = ["macos-private-api"] }
 cocoa = "0.26"