Matches multiple schemas when only one must validate

[yttriumz]

Describe the bug

Wrong diagnostic message when using custom k8s schema instead of "kubernetes". Even if the custom schema is the same as the "kubernetes" one. I checked #247 but it's not the same thing.

Expected Behavior

Should not complain "Matches multiple schemas when only one must validate."

Current Behavior

Complains "Matches multiple schemas when only one must validate."

Steps to Reproduce

1. Open a new folder in VSCode.
2. Create a k8s yaml file like:

   apiVersion: v1
   kind: Service
   metadata:
     name: longhorn-ui-nodeport
     namespace: longhorn-system
   spec:
     type: NodePort
     ports:
     - port: 80
       targetPort: 80
       nodePort: 30080
     selector:
       app: longhorn-ui

3. Create config file .vscode/settings.json with the following content, and make sure yaml.schemas is not configured in user settings:

   {
       "yaml.schemas": {
           "https://raw.githubusercontent.com/yannh/kubernetes-json-schema/master/v1.32.9-standalone-strict/all.json": [
               "*.yaml"
           ],
       }
   }

4. The error happens.

Environment

• Windows
• Mac (VSCode 1.106.0 with redhat.vscode-yaml 1.19.1)
• Linux
• other (please specify)