Single dot shows as a float while it's a string

Describe the bug

When a single dot is a value in key/value map, it is shown as a float while YAML parses it as a string

Expected Behavior

The dot has highlight as a string

Current Behavior

The dot has highlight as a float

Steps to Reproduce

paths:
  etc: /etc
  pwd: .
  number: 3
  up: ./..

. should be highlighted as a string, not as a number. Because YAML will parse it as a string. This parsed as a JSON is:

{
  "paths": {
    "etc": "/etc",
    "pwd": ".",
    "number": 3,
    "up": "./.."
  }
}

Environment

• Windows
• Mac
• Linux
• other (please specify)

Reproduce the issue in VS Code with the YAML snippet from the report and inspect how syntax highlighting classifies the single dot. Trace the relevant YAML highlighting entry point, then verify that . is highlighted as a string while 3 remains a number and ./.. remains a string.