ConvertUsfmVersificationHandler does not move headings immediately before re-versified verses to the new chapter

[pmachapman]

When changing versification moves verses to a new chapter (i.e. from English Joel 2:28-32 to Hebrew Joel 3:1-5, the headings and other non-verse text content should be moved to the start of the new chapter, for example:

[Test]
public void GetUsfm_PreceedingHeadingsNotMoved()
{
	// English vs. Original
	// JOL 2:27-28 = JOL 2:27-3:1

	string usfm =
		@"\id JOL
\c 2
\v 27 Then you will know that I am present in Israel
\q2 and that I am the LORD your God,
\q2 and there is no other.
\q1 My people will never again
\q2 be put to shame.
\s1 I Will Pour Out My Spirit
\r (Acts 2:14–36)
\q1
\v 28 And afterward, I will pour out My Spirit on all people.
\q2 Your sons and daughters will prophesy,
\q1 your old men will dream dreams,
\q2 your young men will see visions.
";

	string target = UpdateUsfm(usfm, sourceVersification: ScrVers.English, targetVersification: ScrVers.Original);
	string result =
		@"\id JOL
\c 2
\v 27 Then you will know that I am present in Israel
\q2 and that I am the LORD your God,
\q2 and there is no other.
\q1 My people will never again
\q2 be put to shame.
\c 3
\s1 I Will Pour Out My Spirit
\r (Acts 2:14–36)
\q1
\v 28 And afterward, I will pour out My Spirit on all people.
\q2 Your sons and daughters will prophesy,
\q1 your old men will dream dreams,
\q2 your young men will see visions.
";
	AssertUsfmEquals(target, result);
}

Instead, the following USFM is generated:

\id JOL
\c 2
\v 27 Then you will know that I am present in Israel
\q2 and that I am the LORD your God,
\q2 and there is no other.
\q1 My people will never again
\q2 be put to shame.
\s1 I Will Pour Out My Spirit
\r (Acts 2:14–36)
\q1
\c 3
\nb
\v 1 And afterward, I will pour out My Spirit on all people.
\q2 Your sons and daughters will prophesy,
\q1 your old men will dream dreams,
\q2 your young men will see visions.