chore(vue): pin version for test app (#29631)

Issue number: N/A

---------

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## What is the current behavior?
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CI tests are failing because of a recent patch from Vue. They start to
fail on Vue v3.4.28.

## What is the new behavior?
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this PR. -->

- Pinned Vue v3.4.27 until we can determine a fix.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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N/A

Author: thetaPC

packages/vue/test/apps/vue3/package.json

@@ -19,7 +19,7 @@
     "@ionic/vue": "^6.0.12",
     "@ionic/vue-router": "^6.0.12",
     "ionicons": "^6.0.4",
-    "vue": "^3.4.14",
+    "vue": "3.4.27",
     "vue-router": "^4.2.5"
   },
   "devDependencies": {