fix(WooCommerce): always expect signature in webhook requests (#28367)

(cherry picked from commit 24b048925b)

Co-authored-by: Sagar Vora <sagar@resilient.tech>

erpnext/erpnext_integrations/connectors/woocommerce_connection.py

@@ -22,8 +22,7 @@ def verify_request():
 	)
 
 	if frappe.request.data and \
-		frappe.get_request_header("X-Wc-Webhook-Signature") and \
-		not sig == bytes(frappe.get_request_header("X-Wc-Webhook-Signature").encode()):
+		not sig == frappe.get_request_header("X-Wc-Webhook-Signature", "").encode():
 			frappe.throw(_("Unverified Webhook Data"))
 	frappe.set_user(woocommerce_settings.creation_user)