fix(Date & Time Node): Add fromFormat option to solve ambiguous date strings (#7675)

Github issue / Community forum post (link here to close automatically):
https://community.n8n.io/t/spreadsheet-date-issue/31551

---------

Co-authored-by: Michael Kret <michael.k@radency.com>

packages/nodes-base/nodes/DateTime/V2/GenericFunctions.ts

@@ -6,15 +6,18 @@ import { NodeOperationError } from 'n8n-workflow';
 export function parseDate(
 	this: IExecuteFunctions,
 	date: string | number | DateTime,
-	timezone?: string,
+	options: Partial<{
+		timezone: string;
+		fromFormat: string;
+	}> = {},
 ) {
 	let parsedDate;
 
 	if (date instanceof DateTime) {
 		parsedDate = date;
 	} else {
-		// Check if the input is a number
-		if (!Number.isNaN(Number(date))) {
+		// Check if the input is a number, don't convert to number if fromFormat is set
+		if (!Number.isNaN(Number(date)) && !options.fromFormat) {
 			//input is a number, convert to number in case it is a string formatted number
 			date = Number(date);
 			// check if the number is a timestamp in float format and convert to integer
@@ -23,6 +26,7 @@ export function parseDate(
 			}
 		}
 
+		let timezone = options.timezone;
 		if (Number.isInteger(date)) {
 			const timestampLengthInMilliseconds1990 = 12;
 			// check if the number is a timestamp in seconds or milliseconds and create a moment object accordingly
@@ -37,7 +41,11 @@ export function parseDate(
 				timezone = `Etc/GMT-${offset * 1}`;
 			}
 
-			parsedDate = DateTime.fromISO(moment(date).toISOString());
+			if (options.fromFormat) {
+				parsedDate = DateTime.fromFormat(date as string, options.fromFormat);
+			} else {
+				parsedDate = DateTime.fromISO(moment(date).toISOString());
+			}
 		}
 
 		parsedDate = parsedDate.setZone(timezone || 'Etc/UTC');