backend: plugins: Remove .plugins from watch list

This fix prevents the development app (when running npm run dev-only-app) from watching for static plugins locally, which causes an endless loop of refreshes to the app.

Fixes: #1937

Signed-off-by: Evangelos Skopelitis <eskopelitis@microsoft.com>

backend/pkg/config/config.go

@@ -179,19 +179,14 @@ func defaultPluginDir() string {
 	//  - "./.plugins" if the ~/.config/Headlamp/plugins can't be made.
 	// Windows: %APPDATA%\Headlamp\Config\plugins
 	//   (for example, C:\Users\USERNAME\AppData\Roaming\Headlamp\Config\plugins)
-	pluginDirDefault := "./.plugins"
-
-	if folderExists(pluginDirDefault) {
-		return pluginDirDefault
-	}
 
 	// https://www.npmjs.com/package/env-paths
 	// https://pkg.go.dev/os#UserConfigDir
 	userConfigDir, err := os.UserConfigDir()
 	if err != nil {
 		logger.Log(logger.LevelError, nil, err, "getting user config dir")
 
-		return pluginDirDefault
+		return "./.plugins"
 	}
 
 	pluginsConfigDir := filepath.Join(userConfigDir, "Headlamp", "plugins")
@@ -207,7 +202,7 @@ func defaultPluginDir() string {
 	if err != nil {
 		logger.Log(logger.LevelError, nil, err, "creating plugins directory")
 
-		return pluginDirDefault
+		return "./.plugins"
 	}
 
 	return pluginsConfigDir