Add test for LIKE newline handling

[Jefffrey]

Which issue does this PR close?

Closes #1915

Rationale for this change

Issue seems resolved, adding a test to lock this in.

What changes are included in this PR?

Are these changes tested?

Are there any user-facing changes?

[alamb]

Nice -- thank you @Jefffrey

I also double checked that \n was properly handled in datafusion

> select 'foo\nbar', 'foo';
+-----------+-------------+
| Utf8("foo | Utf8("foo") |
| bar")     |             |
+-----------+-------------+
| foo       | foo         |
| bar       |             |
+-----------+-------------+
1 row(s) fetched.
Elapsed 0.001 seconds.

[alamb]

(thank you for cleaning up old issues as well 🙏 )