Fix for this bug was merged into ruby_3_4 in 5a42d267bfabc86f86cae2e83de24b1b86bc316a
and should go out in the next 3.4.x release.

... to conform to UTS 18 as mentioned in https://bugs.ruby-lang.org/issues/19417#note-3

https://unicode.org/reports/tr18/#word states word should match join_control chars.

It currently does not:

```ruby
[*0x0..0xD799, *0xE000..0x10FFFF].map { |n| n.chr 'utf-8' } => all_chars
all_chars.grep(/\p{join_control}/) => jc
jc.count # => 2
jc.grep(/\p{word}/).count # => 0
```

0363..036F    ; Alphabetic # Mn  [13] COMBINING LATIN SMALL LETTER A..COMBINING LATIN SMALL LETTER X