Revert "minor #35559 [FrameworkBundle] remove mention of the old Controller class (nicolas-grekas)"

This reverts commit 6bb64734894fe1a37f51ef499fdac37f101352b2, reversing
changes made to 4cce23d9ca20e447239a42e57137e744a78f65f9.

Author: nicolas-grekas

DependencyInjection/RemoveEmptyControllerArgumentLocatorsPass.php

@@ -51,6 +51,9 @@ public function process(ContainerBuilder $container)
                     }
                 }
                 if (!$reason) {
+                    // see Symfony\Component\HttpKernel\Controller\ContainerControllerResolver
+                    $controllers[$id.':'.$action] = $argumentRef;
+
                     if ('__invoke' === $action) {
                         $controllers[$id] = $argumentRef;
                     }

Tests/DependencyInjection/RemoveEmptyControllerArgumentLocatorsPassTest.php

@@ -49,7 +49,7 @@ public function testProcess()
 
         $controllers = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
 
-        $this->assertSame(['c1::fooAction'], array_keys($controllers));
+        $this->assertSame(['c1::fooAction', 'c1:fooAction'], array_keys($controllers));
         $this->assertSame(['bar'], array_keys($container->getDefinition((string) $controllers['c1::fooAction']->getValues()[0])->getArgument(0)));
 
         $expectedLog = [
@@ -73,7 +73,7 @@ public function testInvoke()
         (new RemoveEmptyControllerArgumentLocatorsPass())->process($container);
 
         $this->assertEquals(
-            ['invokable::__invoke', 'invokable'],
+            ['invokable::__invoke', 'invokable:__invoke', 'invokable'],
             array_keys($container->getDefinition((string) $resolver->getArgument(0))->getArgument(0))
         );
     }