Case fix #851

1. 
   rhysbeynon commented at 4:56 pm on February 3, 2025: none

   fixes letter case in icon filename to prior default.
2. Update to MacOS icon

   Replaces the outdated .icns icons for the Bitcoin-Qt gui client for MacOS to align more closely to Apple's design standards and documentation.

   5f58254855
3. correct case usage in filename 39a9dd6069
4. 
   DrahtBot commented at 4:57 pm on February 3, 2025: contributor

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5. rhysbeynon closed this on Feb 3, 2025

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6. rhysbeynon deleted the branch on Feb 3, 2025

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