fix(byok): use EMCN Input for search field instead of ui Input

Replace @/components/ui Input with the already-imported EmcnInput for design-system consistency.

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/settings/components/byok/byok.tsx

@@ -30,7 +30,6 @@ import {
   PerplexityIcon,
   SerperIcon,
 } from '@/components/icons'
-import { Input } from '@/components/ui'
 import { BYOKKeySkeleton } from '@/app/workspace/[workspaceId]/settings/components/byok/byok-skeleton'
 import {
   type BYOKKey,
@@ -239,7 +238,7 @@ export function BYOK() {
               className='h-[14px] w-[14px] flex-shrink-0 text-[var(--text-tertiary)]'
               strokeWidth={2}
             />
-            <Input
+            <EmcnInput
               placeholder='Search providers...'
               value={searchTerm}
               onChange={(e) => setSearchTerm(e.target.value)}