🎨 Palette: Add .accessibilityElement(children: .combine) to emptyState in ContentView.swift

[acebytes]

💡 What: Added .accessibilityElement(children: .combine) to the emptyState VStack in ContentView.swift.
🎯 Why: To group the magnifying glass icon and the texts into a single VoiceOver announcement, avoiding disjointed reading.
📸 Before/After: VoiceOver now reads "Click Scan to find caches. Cacheout will search common developer cache locations" as one element rather than separate items.
♿ Accessibility: Improves VoiceOver experience for empty states by consolidating related text and image into one logical element.

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PR created automatically by Jules for task 16284352130837083132 started by @acebytes

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