fix(db-postgres): ensure index names are not too long (#13428)

Fixes https://github.com/payloadcms/payload/issues/13196

test/database/getConfig.ts

@@ -44,6 +44,39 @@ export const getConfig: () => Partial<Config> = () => ({
           type: 'text',
           name: 'title',
         },
+        {
+          type: 'tabs',
+          tabs: [
+            {
+              name: 'hideout',
+              fields: [
+                {
+                  label: 'Cameras',
+                  type: 'tabs',
+                  unique: true,
+                  tabs: [
+                    {
+                      name: 'camera1',
+                      fields: [
+                        {
+                          type: 'row',
+                          fields: [
+                            {
+                              name: 'time1Image',
+                              type: 'relationship',
+                              relationTo: 'posts',
+                              unique: true,
+                            },
+                          ],
+                        },
+                      ],
+                    },
+                  ],
+                },
+              ],
+            },
+          ],
+        },
       ],
     },
     {

test/database/up-down-migration/migrations/20250811_134524.json

@@ -1,5 +1,5 @@
 {
-  "id": "80e7a0d2-ffb3-4f22-8597-0442b3ab8102",
+  "id": "fc114c71-8138-46c6-b83a-4d70e79e0ea5",
   "prevId": "00000000-0000-0000-0000-000000000000",
   "version": "7",
   "dialect": "postgresql",

test/database/up-down-migration/migrations/index.ts

@@ -1,9 +1,9 @@
-import * as migration_20250714_201659 from './20250714_201659.js'
+import * as migration_20250811_134524 from './20250811_134524.js'
 
 export const migrations = [
   {
-    up: migration_20250714_201659.up,
-    down: migration_20250714_201659.down,
-    name: '20250714_201659',
+    up: migration_20250811_134524.up,
+    down: migration_20250811_134524.down,
+    name: '20250811_134524',
   },
 ]