[POS] Access to current POS location address via useApi

[patryk-smc]

Please list the related package(s)

    "@shopify/ui-extensions": "2024.10.0",
    "@shopify/ui-extensions-react": "2024.10.0",

If this related to specific APIs or components, please list them here

useApi()

Is your feature request related to a problem? Please describe.

Our extension relies on current POS location and there is no way to know from which location the extension is called.

Describe the changes you are looking for

Add posLocation object to useApi with location address.

Describe alternatives you’ve considered

Additional context