Plugins: Hide version information when plugin is managed (#88065)

* first pass

* fixup

* fix linter issues

* fix API test

* update naming

* rework

* update var name

* empty check

* prettier

* fix test

* fix lint

pkg/services/pluginsintegration/managedplugins/managed.go

@@ -0,0 +1,19 @@
+package managedplugins
+
+import "context"
+
+type Manager interface {
+	ManagedPlugins(ctx context.Context) []string
+}
+
+var _ Manager = (*Noop)(nil)
+
+type Noop struct{}
+
+func NewNoop() *Noop {
+	return &Noop{}
+}
+
+func (s *Noop) ManagedPlugins(_ context.Context) []string {
+	return []string{}
+}