Inline code mark incorrectly combined with other marks (e.g., strong), producing invalid ADF

[NoahCardoza]

I found a small bug in the marks processing.

An element cannot be marked as code AND something else like bold, etc.

For example, the following markdown produces the JSON that doesn't comply with the ADF spec.

This **will \`fail\` to** generate ADF correctly.

{
  "version": 1,
  "type": "doc",
  "content": [
    {
      "type": "paragraph",
      "content": [
        {
          "type": "text",
          "text": "This "
        },
        {
          "type": "text",
          "text": "will ",
          "marks": [
            {
              "type": "strong"
            }
          ]
        },
        {
          "type": "text",
          "text": "fail",
          "marks": [
            {
              "type": "code"
            },
            {
              "type": "strong"
            }
          ]
        },
        {
          "type": "text",
          "text": " to",
          "marks": [
            {
              "type": "strong"
            }
          ]
        },
        {
          "type": "text",
          "text": " generate ADF correctly."
        }
      ]
    }
  ]
}

You can test the ADF here: https://developer.atlassian.com/cloud/jira/platform/apis/document/viewer/