201-logic-app-transform-function Transform not omitting XML declaration

201-logic-app-transform-function

### Issue Details
Functionality for transformation seems to add an XML declaration.
I have tried:
1. Really making sure the XSLT is correct.
2. Really making sure the XSLT works locally.
3. Really made sure the XSLT deployed was correct.
4. Sent messages both containing and not containing XML-declaration: Same result.

Here is part of the XSLT:

I realized that this is a setting on the outgoing XML writer. Perhaps you could add functionality for this or to check for it in the XSLT-file?

Start with the Logic App transform function and the outgoing XML writer behavior described in the issue, then compare the XSLT's omit-xml-declaration setting with the generated output. Done means the transform can honor the requested omission of the XML declaration, with the behavior verified for inputs both containing and not containing one.

Written by the indexing model from the issue text.