Add explicit force replacement workflow

internal/storage/path_test.go

@@ -206,3 +206,7 @@ func (b walkBackend) HasAny(context.Context, string) (bool, error) {
 func (b walkBackend) DeleteManagedBundle(context.Context, string, []string, DeleteOptions) error {
 	return nil
 }
+
+func (b walkBackend) DeletePrefix(context.Context, string, DeleteOptions) error {
+	return nil
+}