fix accessible product label double spacing

Author: andrewHEguardian

dotcom-rendering/src/components/Button/productUtils.test.tsx

@@ -31,7 +31,7 @@ describe('createAccessibleProductLabel', () => {
 
 	it('describes the old and new prices accessibly', () => {
 		expect(createAccessibleProductLabel('~£10~ £5 at Shop')).toBe(
-			'Was £10, now  £5 at Shop',
+			'Was £10, now £5 at Shop',
 		);
 	});
 });

dotcom-rendering/src/components/Button/productUtils.tsx

@@ -52,7 +52,7 @@ export const createAccessibleProductLabel = (label: string): string => {
 	if (isUndefined(parsedLabel)) {
 		return label;
 	} else {
-		return `Was ${parsedLabel.struckThrough}, now ${parsedLabel.restOfLabel}`;
+		return `Was ${parsedLabel.struckThrough}, now ${parsedLabel.restOfLabel.trimStart()}`;
 	}
 };