[Hotfix] Cherry-pick desktop dialogs framework to core/1.27 (#5634)

## Summary
Cherry-picked PR #5605 (Add desktop dialogs framework) to core/1.27
branch for hotfix release.

## Cherry-picked commits
- 09e7d1040: Add desktop dialogs framework (#5605)

## Changes
- Data-driven dialog structure in `desktopDialogs.ts`
- Dynamic dialog view component with i18n support
- Button action types: openUrl, close, cancel
- Button severity levels for styling (primary, secondary, danger, warn)
- Fallback invalid dialog for error handling
- i18n collection script updated for dialog strings

## Testing
- Typecheck passed ✓
- Cherry-pick applied cleanly without conflicts

## Impact
This adds the desktop dialog framework feature to the stable 1.27
branch, allowing desktop applications to display standardized dialogs.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5634-Hotfix-Cherry-pick-desktop-dialogs-framework-to-core-1-27-2726d73d3650811188e7f7e58766d52f)
by [Unito](https://www.unito.io)

src/assets/css/style.css

@@ -66,6 +66,8 @@
   --color-charcoal-700: #202121;
   --color-charcoal-800: #171718;
 
+  --color-neutral-550: #636363;
+
   --color-stone-100: #444444;
   --color-stone-200: #828282;
   --color-stone-300: #bbbbbb;
@@ -103,6 +105,10 @@
   --color-danger-100: #c02323;
   --color-danger-200: #d62952;
 
+  --color-coral-red-600: #973a40;
+  --color-coral-red-500: #c53f49;
+  --color-coral-red-400: #dd424e;
+
   --color-bypass: #6a246a;
   --color-error: #962a2a;