backgroundThrottling

Change the default background throttling behaviour.

Platform-specific

• Linux / Windows / Android: Unsupported. Workarounds like a pending WebLock transaction might suffice.

• iOS: Supported since version 17.0+.

• macOS: Supported since version 14.0+.

see https://github.com/tauri-apps/tauri/issues/5250#issuecomment-2569380578