Fix plugin handling and add null check for credentials - Add null check in...

Fix plugin handling and add null check for credentials

• Add null check in getDecodedCredentials to return empty array if credentials are null
• Update PluginOverview to handle new PluginWrapper structure
• Add PluginWrapper interface for typed plugin data
• Update Plugin component to use PluginWrapper type and access plugins correctly
• Adjust table data generation in PluginOverview to use new data structure