Unable to reconcile deployment: Duplicate value: http-app in an attempt to edit the deployment

Steps to repro:

1. Follow the Running a local development environment section on README to prepare a k3d cluster.
2. After apply the sample application, run kubectl edit deploy to change the port number from 80 to something else (i.e. 83).
3. See the error from the terminal that's running spin-operator.

2024-10-14T06:58:10Z    ERROR   Unable to reconcile Deployment  {"controller": "spinapp", "controllerGroup": "core.spinoperator.dev", "controllerKind": "SpinApp", "SpinApp": {"name":"simple-spinapp","namespace":"default"}, "namespace": "default", "name": "simple-spinapp", "reconcileID": "72640040-ef1e-437c-accb-2815effe4d84", "deployment": "simple-spinapp", "error": "Deployment.apps \"simple-spinapp\" is invalid: spec.template.spec.containers[0].ports[1].name: Duplicate value: \"http-app\""}
github.com/spinkube/spin-operator/internal/logging.logrLogger.Error
        /home/mossaka/developer/spinkube/spin-operator-msk/internal/logging/logr_logger.go:72
github.com/spinkube/spin-operator/internal/controller.(*SpinAppReconciler).reconcileDeployment
        /home/mossaka/developer/spinkube/spin-operator-msk/internal/controller/spinapp_controller.go:337
github.com/spinkube/spin-operator/internal/controller.(*SpinAppReconciler).Reconcile
        /home/mossaka/developer/spinkube/spin-operator-msk/internal/controller/spinapp_controller.go:133
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Reconcile
        /home/mossaka/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:114
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler
        /home/mossaka/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:311
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem
        /home/mossaka/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:261
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2
        /home/mossaka/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:222

Start with internal/controller/spinapp_controller.go at reconcileDeployment (around line 337), then review the local development setup in the README and reproduce the kubectl edit flow. Done means editing the deployment's port no longer causes the SpinApp reconciliation to fail with a duplicate http-app name.