🎨 Palette: Add aria-label to Delete Job button

[google-labs-jules]

💡 What: Added aria-label="Delete this simulation job" to the "Delete Job" button in frontend/src/pages/JobStatus.tsx.
🎯 Why: To improve accessibility for screen reader users by providing explicit context for the destructive action, rather than relying on visual context alone.
📸 Before/After: Visually identical. Screen reader users will now hear "Delete this simulation job, button" instead of just "Delete Job, button".
♿ Accessibility: Enhances screen reader clarity and confidence when interacting with destructive actions.

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PR created automatically by Jules for task 268033303590183196 started by @TytaniumDev

[google-labs-jules]

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