[style] migrate to @prettier/plugin-oxc for faster formatting

Replace @trivago/prettier-plugin-sort-imports with @prettier/plugin-oxc
and @ianvs/prettier-plugin-sort-imports for improved performance.

Changes:
- Add @prettier/plugin-oxc (Rust-based fast parser)
- Add @ianvs/prettier-plugin-sort-imports (import sorting compatible with oxc)
- Remove @trivago/prettier-plugin-sort-imports
- Update .prettierrc to use new plugins and compatible import order config
- Reformat all files with new plugin configuration

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

tests-ui/tests/renderer/core/layout/layoutStore.test.ts

@@ -2,8 +2,8 @@ import { beforeEach, describe, expect, it, vi } from 'vitest'
 
 import { layoutStore } from '@/renderer/core/layout/store/layoutStore'
 import {
-  type LayoutChange,
   LayoutSource,
+  type LayoutChange,
   type NodeLayout
 } from '@/renderer/core/layout/types'
 

tests-ui/tests/renderer/core/layout/utils/layoutMath.test.ts

@@ -2,10 +2,10 @@ import { describe, expect, it } from 'vitest'
 
 import type { NodeLayout } from '@/renderer/core/layout/types'
 import {
-  REROUTE_RADIUS,
   boundsIntersect,
   calculateBounds,
-  pointInBounds
+  pointInBounds,
+  REROUTE_RADIUS
 } from '@/renderer/core/layout/utils/layoutMath'
 
 describe('layoutMath utils', () => {

tests-ui/tests/renderer/core/layout/utils/mappers.test.ts

@@ -3,8 +3,8 @@ import * as Y from 'yjs'
 
 import {
   NODE_LAYOUT_DEFAULTS,
-  type NodeLayoutMap,
-  yNodeToLayout
+  yNodeToLayout,
+  type NodeLayoutMap
 } from '@/renderer/core/layout/utils/mappers'
 
 describe('mappers', () => {