Auto-complete for an object only inserts one of the required properties and it's not the 1st one

Describe the bug

The schema definition has multiple required properties. Auto-complete for an object only inserts one of the required properties and it's not the 1st one in the list.

Schema: https://raw.githubusercontent.com/Cloud-Pipelines/component_spec_schema/stable/component_spec.json_schema.json,

Relevant schema definition:

    "IfPlaceholder": {
      "description": "Represents the command-line argument placeholder that will be replaced at run-time by a boolean value specifying whether the caller has passed an argument for the specified optional input.",
      "type": "object",
      "required": ["if"],
      "properties": {
        "if" : {
          "type": "object",
          "required": ["cond", "then"],
          "properties": {
            "cond": {"$ref": "#/definitions/IfConditionArgumentType"},
            "then": {"$ref": "#/definitions/StringOrPlaceholder"},
            "else": {"$ref": "#/definitions/StringOrPlaceholder"}
          }
        }
      }
    },

Steps to Reproduce

Use TAB for auto-complete if:

implementation:
  container:
    image: alpine
    command:
      - if<TAB>

Current Behavior

      - if:
          then:
            -

Expected Behavior

      - if:
          cond: ???
          then:
            -

Environment

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

Reproduce the issue in VS Code using the linked component schema and the YAML command example, then trace the autocomplete handling for object properties with multiple required fields. Done means completing if inserts both cond and then, with cond appearing first as shown in the expected behavior.