Image rendering: Fix missing icon on plugins list (#23958)

Fixes #23189

pkg/plugins/plugins.go

@@ -121,6 +121,10 @@ func (pm *PluginManager) Init() error {
 		app.initApp()
 	}
 
+	if Renderer != nil {
+		Renderer.initFrontendPlugin()
+	}
+
 	for _, p := range Plugins {
 		if p.IsCorePlugin {
 			p.Signature = PluginSignatureInternal

pkg/plugins/renderer_plugin.go

@@ -13,7 +13,7 @@ import (
 )
 
 type RendererPlugin struct {
-	PluginBase
+	FrontendPluginBase
 
 	Executable           string `json:"executable,omitempty"`
 	GrpcPluginV1         pluginModel.RendererPlugin