Fix typescript type error in admin-e2e-tests package (https://github.com/woocommerce/woocommerce-admin/pull/7765)

* Fix type error

* Update changelog

* Better type handlings

plugins/woocommerce-admin/packages/admin-e2e-tests/CHANGELOG.md

@@ -3,6 +3,8 @@
 
 -   Make unchecking free features more robust. #7761
 
+-   Fix typescript type error in admin-e2e-tests package #7765
+
 # 0.1.2
 
 -   Add Customers to analytics pages tested #7573

plugins/woocommerce-admin/packages/admin-e2e-tests/src/pages/BasePage.ts

@@ -142,9 +142,11 @@ export abstract class BasePage {
 				timeout: 10000,
 			} );
 		} catch ( e ) {
-			throw new Error(
-				`Could not navigate to url: ${ fullUrl } with error: ${ e.message }`
-			);
+			if ( e instanceof Error ) {
+				throw new Error(
+					`Could not navigate to url: ${ fullUrl } with error: ${ e.message }`
+				);
+			}
 		}
 	}
 }