Issue #3474292 by phenaproxima, iamcorekhan, catch, tedbow: Package Manager...

Issue #3474292 by phenaproxima, iamcorekhan, catch, tedbow: Package Manager should disallow cweagans/composer-patches by default

core/assets/schemas/v1/metadata-full.schema.json

@@ -4,6 +4,7 @@
   "$defs": {
     "slotDefinition": {
       "type": "object",
+      "additionalProperties": false,
       "patternProperties": {
         "^[a-zA-Z0-9_-]+$": {
           "type": "object",

core/assets/schemas/v1/metadata.schema.json

@@ -4,6 +4,7 @@
   "$defs": {
     "slotDefinition": {
       "type": "object",
+      "additionalProperties": false,
       "patternProperties": {
         "^[a-zA-Z0-9_-]+$": {
           "type": "object",

core/tests/Drupal/Tests/Core/Theme/Component/ComponentValidatorTest.php

@@ -123,6 +123,19 @@ public static function dataProviderValidateDefinitionInvalid(): \Generator {
       ],
     ];
     yield 'invalid slot (type)' => [$cta_with_invalid_slot_type];
+
+    $cta_with_invalid_slot_name = $valid_cta;
+    $cta_with_invalid_slot_name['slots'] = [
+      'valid_slot' => [
+        'title' => 'Valid slot',
+        'description' => 'Valid slot description',
+      ],
+      'invalid slot' => [
+        'title' => 'Invalid slot',
+        'description' => 'Slot name cannot have spaces',
+      ],
+    ];
+    yield 'invalid slot (name with spaces)' => [$cta_with_invalid_slot_name];
   }
 
   /**