[data grid] Stop event propagation on data grid action buttons (GridActionsCellItem)

[Copilot]

When data grid rows are wrapped in anchor elements, clicking action buttons would bubble up to the anchor and trigger unintended navigation. This PR adds event propagation prevention to all action button click handlers.

Changes Made

GridActionsCell.tsx

Added event.stopPropagation() and event.preventDefault() to the handleButtonClick function to prevent action button clicks from bubbling up to parent elements.

GridActionsCellItem.tsx

Added event.stopPropagation() and event.preventDefault() to both handleClick functions:

• For regular action buttons (not in menu)
• For action buttons displayed within menus

Example Scenario

// Before: Clicking "Edit" would navigate to the row link
<a href="/user/123">
  <DataGrid 
    rows={rows}
    columns={[
      {
        field: 'actions',
        type: 'actions',
        getActions: () => [
          <GridActionsCellItem icon={<EditIcon />} label="Edit" onClick={handleEdit} />
        ]
      }
    ]}
  />
</a>

// After: Clicking "Edit" only triggers handleEdit, no navigation occurs

This ensures that action buttons work independently of any parent clickable elements while maintaining normal row click behavior for non-action areas.

Fixes #19432.

---

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Deploy preview: https://deploy-preview-19513--material-ui-x.netlify.app/

Bundle size report

Bundle	Parsed size	Gzip size
@mui/x-data-grid	🔺+117B(+0.03%)	🔺+29B(+0.02%)
@mui/x-data-grid-pro	🔺+117B(+0.02%)	🔺+31B(+0.02%)
@mui/x-data-grid-premium	🔺+117B(+0.02%)	🔺+28B(+0.01%)
@mui/x-charts	0B(0.00%)	0B(0.00%)
@mui/x-charts-pro	0B(0.00%)	0B(0.00%)
@mui/x-charts-premium	0B(0.00%)	0B(0.00%)
@mui/x-date-pickers	0B(0.00%)	0B(0.00%)
@mui/x-date-pickers-pro	0B(0.00%)	0B(0.00%)
@mui/x-tree-view	0B(0.00%)	0B(0.00%)
@mui/x-tree-view-pro	0B(0.00%)	0B(0.00%)

Details of bundle changes

Generated by 🚫 dangerJS against a8d221e

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[github-actions]

This pull request has been closed due to 15 days of inactivity after being marked stale.