Fixes#25825, #26026.
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If the formatter adjusts the wrapping and causes list-like characters to appear at the beginning of a line, those characters will be mistakenly converted into a list in the next formatting step.
Therefore, it is necessary to guard meaningful characters so that they do not appear at the beginning of a line.
Also, fixed an issue where character that should have originally been interpreted as lists were not, aligning with the CommonMark behavior.