feat(minimap): add node execution status visualization (#9187)

## Summary

Added visual indicators (colored borders) to the MiniMap to display the
real-time execution status (running, executed, or error) of nodes.

## Changes

- **What**: Added visual feedback to the MiniMap to show node execution
states (green for running/executed, red for errors) by integrating with
`useExecutionStore` and updating the canvas renderer.

## Review Focus

Confirmed that relying on the array `.includes()` check for
`executingNodeIds` in the data sources avoids unnecessary `Set`
allocations during frequent redraws.

## Screenshots 

<img width="540" height="446" alt="14949d48035db5c64cceb11f7f7f94a3"
src="https://github.com/user-attachments/assets/cac53a80-9882-43fd-a725-7003fe3fd21a"
/>

<img width="562" height="464" alt="7e922f54dea2cea4e6b66202d2ad0dd3"
src="https://github.com/user-attachments/assets/e178b981-3af0-417f-8e21-a706f192fabf"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9187-feat-minimap-add-node-execution-status-visualization-3126d73d3650816eb7b3ca415cf6a8f1)
by [Unito](https://www.unito.io)

src/renderer/extensions/minimap/data/MinimapDataSource.test.ts

@@ -15,6 +15,13 @@ vi.mock('@/renderer/core/layout/store/layoutStore', () => ({
   }
 }))
 
+// Mock useExecutionStore
+vi.mock('@/stores/executionStore', () => ({
+  useExecutionStore: vi.fn().mockReturnValue({
+    nodeProgressStates: {}
+  })
+}))
+
 // Helper to create mock links that satisfy LGraph['links'] type
 function createMockLinks(): LGraph['links'] {
   const map = new Map<number, LLink>()