Fix: Optimized variable node display and Agent template multi-language support #3221 (#9787)

### What problem does this PR solve?

Fix: Optimized variable node display and Agent template multi-language
support #3221

- Modified the VariableNode component to add parent label and icon
properties
- Updated the VariablePickerMenuPlugin to support displaying parent
labels and icons
- Adjusted useBuildNodeOutputOptions and useBuildBeginVariableOptions to
pass new properties
- Optimized the Agent TemplateCard component to switch the title and
description based on the language

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/agent/store.ts

@@ -204,6 +204,7 @@ const useGraphStore = create<RFState>()(
         set({ nodes: nextNodes });
       },
       getNode: (id?: string | null) => {
+        // console.log('getNode', id, get().nodes);
         return get().nodes.find((x) => x.id === id);
       },
       getOperatorTypeFromId: (id?: string | null) => {