fix: "Add to Twenty" button render fix (chrome-extension) (#5048)

fix - #5047

packages/twenty-chrome-extension/src/utils/isDefined.ts

@@ -0,0 +1,4 @@
+import { isNull, isUndefined } from '@sniptt/guards';
+
+export const isDefined = <T>(value: T | null | undefined): value is T =>
+  !isUndefined(value) && !isNull(value);