Failure to properly interpret github workflows schema

Describe the bug

I discovered a bug in yaml language server which makes it confused and report a false positive with current github-workflows schemas, even if these schemas are valid, tested (ajv) to ensure they accept that values.

on:
  create:
    tags:  # <-- this is valid but extension believes create should only allow arrays
    - "**"

Schema: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/github-workflow.json

postive-test file for that schema that includes the our bug https://github.com/SchemaStore/schemastore/blob/master/src/test/github-workflow/918.json#L5

Expected Behavior

Pass validating with schemas that are already tested.

Current Behavior

Property tags is not allowed. is reported when it should not be.

Steps to Reproduce

1. create a file under .github/workflows/sample.yml
2. put the snipped above in it
3. check for false positive result

Start with the reproducer in .github/workflows/sample.yml and compare it with the linked github-workflow.json schema and positive test 918.json. Trace how the YAML language server interprets the on.create.tags value; done means the valid workflow passes validation without the Property tags is not allowed. diagnostic.