fix: poll longer for Status & History table to load in preauth worker

Status & History page loads results asynchronously; a single 20s wait
was giving up before the row appeared, so the pre-auth number was
never captured. Now polls up to 75s for a populated row.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/SeleniumService/selenium_UnitedDH_preAuthWorker.py

@@ -1139,14 +1139,24 @@ class AutomationUnitedDHPreAuth:
             time.sleep(3)
             print(f"[UnitedDH PreAuth] step9: Status & History URL: {self.driver.current_url}")
 
-            # Wait for table rows with actual data (not just headers)
-            try:
-                WebDriverWait(self.driver, 20).until(
-                    EC.presence_of_element_located((By.XPATH, "//table//tr[td]"))
-                )
+            # Wait for table rows with actual data (not just headers). The list loads
+            # asynchronously and can take a while to populate, so poll for a good
+            # while (up to ~75s total) instead of giving up after one short wait.
+            row_deadline = time.time() + 75
+            found_rows = False
+            while time.time() < row_deadline:
+                try:
+                    rows = self.driver.find_elements(By.XPATH, "//table//tr[td]")
+                    if rows and any(r.text.strip() for r in rows):
+                        found_rows = True
+                        break
+                except Exception:
+                    pass
+                time.sleep(3)
+            if found_rows:
                 time.sleep(2)
-            except Exception:
-                print("[UnitedDH PreAuth] step9: Table rows did not appear — proceeding with body scan")
+            else:
+                print("[UnitedDH PreAuth] step9: Table rows did not appear after 75s — proceeding with body scan")
 
             preauth_number = None