Use finally insead of isset on error

By using the `finally` keyword we don't need to check if the error
was thrown, and then throw it again after the checks.

This _should_ also help a bit more in case one needs to debug where
an error came from, as the original error is still raised, instead of
being caught and thrown again.

src/Framework/TestCase.php

@@ -1662,22 +1662,16 @@ private function verifyMockObjects(): void
         if ($this->prophet !== null) {
             try {
                 $this->prophet->checkPredictions();
-            } catch (Throwable $t) {
-                /* Intentionally left empty */
-            }
-
-            foreach ($this->prophet->getProphecies() as $objectProphecy) {
-                foreach ($objectProphecy->getMethodProphecies() as $methodProphecies) {
-                    /** @var MethodProphecy[] $methodProphecies */
-                    foreach ($methodProphecies as $methodProphecy) {
-                        $this->numAssertions += \count($methodProphecy->getCheckedPredictions());
+            } finally {
+                foreach ($this->prophet->getProphecies() as $objectProphecy) {
+                    foreach ($objectProphecy->getMethodProphecies() as $methodProphecies) {
+                        /** @var MethodProphecy[] $methodProphecies */
+                        foreach ($methodProphecies as $methodProphecy) {
+                            $this->numAssertions += \count($methodProphecy->getCheckedPredictions());
+                        }
                     }
                 }
             }
-
-            if (isset($t)) {
-                throw $t;
-            }
         }
     }