Overhaul validation logic

Now, rather than retrying until we get a correct URL or a timeout, we
check once, then, if the URL is wrong, we wait for a URL change and
check again. (Unless, the current page is a bailout, in which case we
know that the page isn't going to change)

playwright-tests/pages/BasePage.ts

@@ -116,12 +116,22 @@ export class BasePage {
     }
 
     async validateURL(issPageValue: string) {
+        let pass = false;
+        let currentUrl = this.page.url();
+        pass = currentUrl.includes(issPageValue);
+        const isBailout = currentUrl.includes('bailout-page');
+        if(!pass && !isBailout) {
+            await this.waitForURLToChange(currentUrl);
+            currentUrl = this.page.url();        
+            pass = currentUrl.includes(issPageValue);
+        }
+        expect(pass).toBeTruthy();
+    }
+
+    async waitForURLToChange(startingUrl: string) {
         await expect(async () => {
             const currentUrl = this.page.url();
-            expect(currentUrl).toContain(issPageValue);
+            expect(currentUrl).not.toEqual(startingUrl);          
-        }).toPass({
+        }).toPass({ timeout: 180_000 });        
-            intervals: [1_000],
-            timeout: 15_000
-        });
     }
 }