Fix spaces in code step + suggestion overflow (#17664)

- fixedOverflowWidgets fixes the suggestions being overflow outside the
editor
- on focus, stop event propagation to avoid catching spaces as document
level events

packages/twenty-front/src/modules/workflow/workflow-steps/workflow-actions/code-action/components/WorkflowEditActionCode.tsx

@@ -443,6 +443,7 @@ export const WorkflowEditActionCode = ({
                   scrollBeyondLastLine: false,
                   padding: { top: 4, bottom: 4 },
                   lineNumbersMinChars: 2,
+                  fixedOverflowWidgets: true,
                 }}
                 readonly={actionOptions.readonly}
                 onEnterFullScreen={handleEnterFullScreen}