chore: add postinstall to vue 2 examples to fix vue-demi, add vue 2.7 example link to docs (#10063)

* chore: add postinstall to vue 2 examples to fix `vue-demi`, add vue 2.7 example link to docs

* ci: apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

Author: DamianOsipiuk

docs/config.json

@@ -1049,7 +1049,6 @@
         }
       ]
     },
-
     {
       "label": "Examples",
       "children": [],
@@ -1199,6 +1198,10 @@
               "label": "Vue 2.6",
               "to": "framework/vue/examples/2.6-basic"
             },
+            {
+              "label": "Vue 2.7",
+              "to": "framework/vue/examples/2.7-basic"
+            },
             {
               "label": "Nuxt 3",
               "to": "framework/vue/examples/nuxt3"

examples/vue/2.6-basic/package.json

@@ -3,6 +3,7 @@
   "private": true,
   "type": "module",
   "scripts": {
+    "postinstall": "vue-demi-switch 2",
     "dev": "vite",
     "_build": "vite build",
     "_preview": "vite preview"

examples/vue/2.7-basic/README.md

@@ -1,4 +1,4 @@
-# 2.6 Basic example
+# 2.7 Basic example
 
 To run this example:
 

examples/vue/2.7-basic/package.json

@@ -2,6 +2,7 @@
   "name": "@tanstack/query-example-vue-2.7-basic",
   "private": true,
   "scripts": {
+    "postinstall": "vue-demi-switch 2.7",
     "dev": "vite",
     "_build": "vite build",
     "_build:dev": "vite build -m development",