minor symfony#60021 [DoctrineBridge] Strengthen EM reset logic (nicolas-grekas)

This PR was merged into the 7.3 branch.

Discussion
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[DoctrineBridge] Strengthen EM reset logic

| Q             | A
| ------------- | ---
| Branch?       | 7.3
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | -
| License       | MIT

Commits
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e9c6056 [DoctrineBridge] Strengthen EM reset logic

Author: nicolas-grekas

src/Symfony/Bridge/Doctrine/ManagerRegistry.php

@@ -59,7 +59,8 @@ function (&$wrappedInstance, LazyLoadingInterface $manager) use ($name) {
                     $name = $this->aliases[$name] ?? $name;
                     $wrappedInstance = match (true) {
                         isset($this->fileMap[$name]) => $this->load($this->fileMap[$name], false),
-                        (new \ReflectionMethod($this, $method = $this->methodMap[$name]))->isStatic() => $this->{$method}($this, false),
+                        !$method = $this->methodMap[$name] ?? null => throw new \LogicException(\sprintf('The "%s" service is synthetic and cannot be reset.', $name)),
+                        (new \ReflectionMethod($this, $method))->isStatic() => $this->{$method}($this, false),
                         default => $this->{$method}(false),
                     };
                     $manager->setProxyInitializer(null);
@@ -86,7 +87,8 @@ function () use ($name) {
 
                     return match (true) {
                         isset($this->fileMap[$name]) => $this->load($this->fileMap[$name], false),
-                        (new \ReflectionMethod($this, $method = $this->methodMap[$name]))->isStatic() => $this->{$method}($this, false),
+                        !$method = $this->methodMap[$name] ?? null => throw new \LogicException(\sprintf('The "%s" service is synthetic and cannot be reset.', $name)),
+                        (new \ReflectionMethod($this, $method))->isStatic() => $this->{$method}($this, false),
                         default => $this->{$method}(false),
                     };
                 },