feat: No expression error when node hasn’t executed (#8448)

Co-authored-by: Giulio Andreini <andreini@netseven.it>
Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>

packages/editor-ui/src/stores/ndv.store.ts

@@ -75,6 +75,10 @@ export const useNDVStore = defineStore(STORES.NDV, {
 			return executionData.data?.resultData?.runData?.[inputNodeName]?.[inputRunIndex]?.data
 				?.main?.[inputBranchIndex];
 		},
+		hasInputData(): boolean {
+			const data = this.ndvInputData;
+			return data && data.length > 0;
+		},
 		getPanelDisplayMode() {
 			return (panel: NodePanelType) => this[panel].displayMode;
 		},