Incorrect OpenAPI Schema Generation with `New-PodeOAObjectProperty` and `-NoProperties` Parameter

[mdaneri]

Describe the Bug

When using New-PodeOAObjectProperty with the -AdditionalProperties parameter and the -NoProperties switch, the generated OpenAPI schema incorrectly includes an empty properties array.

Steps To Reproduce

1. Run the following PowerShell command:

   New-PodeOAObjectProperty -Name 'HeaderFields' -AdditionalProperties (New-PodeOAStringProperty) -NoProperties | Add-PodeOAComponentSchema -Name 'test'

2. This generates the following incorrect OpenAPI YAML:

   components: 
     schemas: 
       test: 
         type: object
         properties: []
         additionalProperties: 
           type: string

The properties: [] array should not be present.

Expected Behavior

The generated OpenAPI YAML should not include the properties: [] array when the -NoProperties switch is used. The corrected YAML should look like this:

components: 
  schemas: 
    test: 
      type: object
      additionalProperties: 
        type: string

Fix

Ensure that the properties array is omitted from the generated OpenAPI schema when the -NoProperties switch is used.