Fix clipboard copy controls that report success after failure

[tsouth89]

Problem

CopyIconButton calls navigator.clipboard.writeText(...) without awaiting it, then immediately shows the copied state. If clipboard access is denied or the write rejects, Ceiling still tells the user the value was copied.

The idle accessible name also uses ActionCopyError, so a screen reader announces “Copy error” before the user has tried to copy anything.

Where

• apps/desktop-tauri/src/components/MenuCard.tsx (CopyIconButton)
• Used for provider errors in MenuCard.tsx
• Used for login/device codes in settings/tokens/TokenAccountsPanel.tsx and settings/providers/sections/QuickActionsSection.tsx

Expected behavior

• Await the clipboard write.
• Show the copied state only after the promise resolves.
• Expose a short failure state if the write rejects.
• Add/use a neutral localized “Copy” label for the idle button.
• Keep the current copied-state timeout after a successful write.

Tests

Add focused component tests for resolved and rejected clipboard promises, and assert the idle/success/failure accessible names.