Fix #2567 - still remap params in some circumstances

src/Psalm/Internal/Analyzer/TypeAnalyzer.php

@@ -1877,6 +1877,8 @@ class TypeAnalyzer
                             $input_type_part->value,
                             $generic_params
                         );
+
+                        $container_type_part->remapped_params = false;
                     }
                 }
 

tests/Template/ClassTemplateExtendsTest.php

@@ -2740,6 +2740,26 @@ class ClassTemplateExtendsTest extends TestCase
                         public function zip(): C;
                     }',
             ],
+            'implementsParameterisedIterator' => [
+                '<?php
+                    /**
+                     * @implements \IteratorAggregate<int,\stdClass>
+                     */
+                    class SelectEntries implements \IteratorAggregate
+                    {
+                        public function getIterator(): SelectIterator {
+                            return new SelectIterator();
+                        }
+                    }
+
+                    /**
+                     * @implements \Iterator<int,\stdClass>
+                     * @psalm-suppress UnimplementedInterfaceMethod
+                     */
+                    class SelectIterator implements \Iterator
+                    {
+                    }'
+            ],
         ];
     }