[css-text-4] Unicode category in "fullwidth closing punctuation"

https://drafts.csswg.org/css-text-4/#fullwidth-closing-punctuation

Current text:

fullwidth closing punctuation
Includes any closing punctuation character (Unicode category Pe) that belongs to …

I checked Unicode category Pe and found that this category does not include closing punctuations "、。，．" (ideographic/fullwidth comma/fullstop). I think this should be Line_Break property: Close_Punctuation (CL) that includes "，﹐ 、︑ ．﹒ 。︒ ".

On the other hand, about the fullwidth opening punctuation, current definition "any opening punctuation character (Unicode category Ps) that belongs to …" is ok, and changing the category to "Line_Break property: Open_Punctuation (OP)" will be also ok since the character sets are same in the range "that belongs to the CJK Symbols and Punctuation block (U+3000–U+303F) or is categorized as East Asian Fullwidth (F)".

Start at the CSS Text 4 “fullwidth closing punctuation” section linked in the issue and compare its Unicode category reference with the linked Unicode sets. Update the definition to use the Line_Break Close_Punctuation (CL) property, then verify that the surrounding opening-punctuation definition remains correct.