Fix(node): fix priority of DecorationNode and String type nodes

[progfay]

Proposed Changes

• Change notation priority of parsing.
• Make decoration notation higher than strong text, strong icon, strong image notations.

Cases of target of fixing

Unexpected parsing behavior was found.

Input:

parse('[! [[link]]]', { hasTitle: false })

Expected:

[
  {
    "indent": 0,
    "type": "line",
    "nodes": [
      {
        "type": "decoration",
        "raw": "[! [[link]]",
        "rawDecos": "!",
        "decos": [
          "!"
        ],
        "nodes": [
          {
            "type": "plain",
            "raw": "[",
            "text": "["
          },
          {
            "type": "link",
            "raw": "[link]",
            "pathType": "relative",
            "href": "link",
            "content": ""
          }
        ]
      },
      {
        "type": "plain",
        "raw": "]",
        "text": "]"
      }
    ]
  }
]

Actual:

[
  {
    "indent": 0,
    "type": "line",
    "nodes": [
      {
        "type": "plain",
        "text": "[! "
      },
      {
        "type": "strong",
        "nodes": [
          {
            "type": "plain",
            "text": "link]"
          }
        ]
      }
    ]
  }
]

Similar case is occurred on strong icon notation, strong text notation, strong image notation in decoration notation.

• [! [[link]]]
• [! [[progfay.icon]]]
• [! [[https://example.com/image.png]]]