chore(branding): re-export the branding barrel through the absolute alias

Matches the repo's absolute-import rule and the majority of lib barrels
(billing, table, uploads and five others), instead of leaving this file
split between relative and absolute re-exports.

Author: waleedlatif1

apps/sim/lib/branding/index.ts

@@ -1,4 +1,8 @@
-export { defaultBrandConfig } from './defaults'
-export type { BrandConfig, ThemeColors } from './types'
-export { HEX_COLOR_REGEX } from './types'
-export { EMAIL_WORDMARK_SIZE, WORDMARK_PATHS, WORDMARK_VIEW_BOX } from './wordmark'
+export { defaultBrandConfig } from '@/lib/branding/defaults'
+export type { BrandConfig, ThemeColors } from '@/lib/branding/types'
+export { HEX_COLOR_REGEX } from '@/lib/branding/types'
+export {
+  EMAIL_WORDMARK_SIZE,
+  WORDMARK_PATHS,
+  WORDMARK_VIEW_BOX,
+} from '@/lib/branding/wordmark'