Issue #3410312 by catch: Flood database backend ::isAllowed() should call ::ensureTableExists()

(cherry picked from commit a3f1255f)

core/lib/Drupal/Core/Flood/DatabaseBackend.php

@@ -140,7 +140,9 @@ public function isAllowed($name, $threshold, $window = 3600, $identifier = NULL)
       return ($number < $threshold);
     }
     catch (\Exception $e) {
-      $this->catchException($e);
+      if (!$this->ensureTableExists()) {
+        throw $e;
+      }
       return TRUE;
     }
   }

core/profiles/standard/tests/src/FunctionalJavascript/StandardPerformanceTest.php

@@ -60,7 +60,7 @@ public function testAnonymous() {
     // the highest and lowest number of observed during test runs.
     // See https://www.drupal.org/project/drupal/issues/3402610
     $this->assertGreaterThanOrEqual(58, $performance_data->getQueryCount());
-    $this->assertLessThanOrEqual(67, $performance_data->getQueryCount());
+    $this->assertLessThanOrEqual(68, $performance_data->getQueryCount());
     $this->assertGreaterThanOrEqual(129, $performance_data->getCacheGetCount());
     $this->assertLessThanOrEqual(132, $performance_data->getCacheGetCount());
     $this->assertGreaterThanOrEqual(59, $performance_data->getCacheSetCount());
@@ -131,7 +131,7 @@ public function testLogin(): void {
     // random test failures, assert greater than equal the highest and lowest
     // number of queries observed during test runs.
     // See https://www.drupal.org/project/drupal/issues/3402610
-    $this->assertLessThanOrEqual(42, $performance_data->getQueryCount());
+    $this->assertLessThanOrEqual(39, $performance_data->getQueryCount());
     $this->assertGreaterThanOrEqual(39, $performance_data->getQueryCount());
     $this->assertSame(28, $performance_data->getCacheGetCount());
     $this->assertLessThanOrEqual(2, $performance_data->getCacheSetCount());
@@ -163,14 +163,15 @@ public function testLoginBlock(): void {
     $performance_data = $this->collectPerformanceData(function () use ($account) {
       $this->submitLoginForm($account);
     });
-    $this->assertLessThanOrEqual(51, $performance_data->getQueryCount());
+    $this->assertLessThanOrEqual(50, $performance_data->getQueryCount());
     $this->assertGreaterThanOrEqual(48, $performance_data->getQueryCount());
-    $this->assertSame(30, $performance_data->getCacheGetCount());
-
-    // This test observes a variable number of cache sets, so to avoid random
+    // This test observes a variable number of cache operations, so to avoid random
     // test failures, assert greater than equal the highest and lowest number
     // observed during test runs.
     // See https://www.drupal.org/project/drupal/issues/3402610
+    $this->assertLessThanOrEqual(32, $performance_data->getCacheGetCount());
+    $this->assertGreaterThanOrEqual(30, $performance_data->getCacheGetCount());
+
     $this->assertLessThanOrEqual(4, $performance_data->getCacheSetCount());
     $this->assertGreaterThanOrEqual(1, $performance_data->getCacheSetCount());
     $this->assertSame(1, $performance_data->getCacheDeleteCount());