Deployment intent is now implied by the install package field: if a package is
supplied the product is installed to the selected pods after being added; if not,
it is only added to the catalog. Removes the checkbox (dlgAddProduct) and the
push-decision branch (AddProduct_Click). The register-only-without-package path is
retired with it, so the now-dead RegisterProductOnSelectedPods is removed too.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>