FIX: Show auto-group flair according to user preferences (#21221)

spec/requests/api/posts_spec.rb

@@ -116,6 +116,9 @@ RSpec.describe "posts" do
                        flair_color: {
                          type: %i[string null],
                        },
+                       flair_group_id: {
+                         type: %i[string null],
+                       },
                        version: {
                          type: :integer,
                        },

spec/requests/api/schemas/json/admin_user_response.json

@@ -413,6 +413,9 @@
             "flair_color": {
               "type": ["string", "null"]
             },
+            "flair_group_id": {
+              "type": ["string", "null"]
+            },
             "bio_raw": {
               "type": ["string", "null"]
             },

spec/requests/api/schemas/json/post_replies_response.json

@@ -101,6 +101,12 @@
           "null"
         ]
       },
+      "flair_group_id": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
       "version": {
         "type": "integer"
       },

spec/requests/api/schemas/json/post_show_response.json

@@ -88,6 +88,12 @@
         "null"
       ]
     },
+    "flair_group_id": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
     "version": {
       "type": "integer"
     },

spec/requests/api/schemas/json/post_update_response.json

@@ -92,6 +92,12 @@
             "null"
           ]
         },
+        "flair_group_id": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
         "version": {
           "type": "integer"
         },

spec/requests/api/schemas/json/topic_create_response.json

@@ -103,6 +103,12 @@
         "null"
       ]
     },
+    "flair_group_id": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
     "version": {
       "type": "integer"
     },

spec/requests/api/schemas/json/topic_show_response.json

@@ -828,6 +828,12 @@
                     "null"
                   ]
                 },
+                "flair_group_id": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
                 "admin": {
                   "type": "boolean"
                 },

spec/serializers/web_hook_post_serializer_spec.rb

@@ -32,6 +32,7 @@ RSpec.describe WebHookPostSerializer do
       :display_username,
       :primary_group_name,
       :flair_name,
+      :flair_group_id,
       :version,
       :user_title,
       :bookmarked,