fix: address PR review feedback

- Show error notification on setup failure instead of silent reset
- Fix toggleKind stale closure by using prop array directly
- Remove duplicate translations from en-gb.json (falls back to en.json)
- Align seed board columnCount to 12 (codebase default)
- Extract shared placeAllWidgetsAsync helper to @homarr/db/queries
- Remove redundant onboardingFormSchema; reuse formSchema for both paths
- Fix lint errors (optional chain, unused imports, unnecessary conditions)

packages/definitions/src/integration.ts

@@ -473,7 +473,7 @@ export const getIntegrationDefaultPort = (kind: IntegrationKind): number | undef
 
 export const getIntegrationApiKeyUrl = (integrationUrl: string, kind: IntegrationKind): string | null => {
   const definition = integrationDefs[kind];
-  if (!("apiKeySettingsPath" in definition) || !definition.apiKeySettingsPath) return null;
+  if (!("apiKeySettingsPath" in definition)) return null;
   const base = integrationUrl.replace(/\/+$/, "");
   if (!base) return null;
   return `${base}${definition.apiKeySettingsPath}`;