one extraneous space in text output of figure name

[alicerusso]

Describe the issue

input:

        <figure anchor="Reply_message">
          <name>Reply Message Consisting of a Fixed Header, a Request Block TLV, Report     
Block TLV(s), a Name TLV, a Reply Block TLV, and Reply Sub-Block TLV(s)</name>

Text output:

      Figure 8: Reply Message Consisting of a Fixed Header, a Request
       Block TLV, Report Block TLV(s), a Name TLV, a Reply Block TLV,
                        and Reply Sub- Block TLV(s)

Desired output (no space after the hyphen):

      Figure 8: Reply Message Consisting of a Fixed Header, a Request
       Block TLV, Report Block TLV(s), a Name TLV, a Reply Block TLV,
                        and Reply Sub-Block TLV(s)

files:
https://www.rfc-editor.org/v3test/test9344.xml
https://www.rfc-editor.org/v3test/test9344.txt
(PDF and HTML are not affected.)

Code of Conduct

• I agree to follow the IETF's Code of Conduct

[kesara]

I have two code change proposals for this:

1. fix: Avoid breaking text on hyphens  #965 Avoid breaking lines by hyphens. - This affects all text elements. I prefer this but this may have undesirable changes. See the text changes in the PR.
2. fix: Include figure prefix in name before rendering text #966 Include the figure prefix before rending the name text. - This only affects figure > name. Note this change will also change how Figure names are wrapped in the past. See the text changes in the PR.

Other work around is to use non-breaking hyphen (‑). This doesn't need any code changes.

[cabo]

The part that I don't understand is why the figure name (apparently) is formatted to a width and then reflowed for a different width.
NBHY indeed is a workaround until we figure that out.