fix(connectors): reset apiKeyFocused on connector re-selection

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/add-connector-modal/add-connector-modal.tsx

@@ -143,6 +143,7 @@ export function AddConnectorModal({ open, onOpenChange, knowledgeBaseId }: AddCo
     setSourceConfig({})
     setSelectedCredentialId(null)
     setApiKeyValue('')
+    setApiKeyFocused(false)
     setDisabledTagIds(new Set())
     setCanonicalModes({})
     setError(null)