musicxml exports doesn't accout for muted strings in chord graphs when the x is in the graph

[MikePia]

Issue type

Import/export issue

Description with steps to reproduce

he MusicXML export for chords does not account for muted strings, which are represented as "x" in the chord diagrams. For example, in the Gm6 chord, string 5 is marked with "x" in the diagram (See image), indicating muted strings, but the MusicXML export lists frets for these strings.

Here is the mxml snippet:

<harmony print-frame="no">
        <root>
          <root-step>G</root-step>
          </root>
        <kind text="m6">minor-sixth</kind>
        <frame>
          <frame-strings>6</frame-strings>
          <frame-frets>4</frame-frets><harmony print-frame="no">
        <root>
          <root-step>G</root-step>
          </root>
        <kind text="m6">minor-sixth</kind>
        <frame>
          <frame-strings>6</frame-strings>
          <frame-frets>4</frame-frets>
          <frame-note>
            <string>6</string>
            <fret>3</fret>
            </frame-note>
          <frame-note>
            <string>5</string>
            <fret>3</fret>
            </frame-note>
          <frame-note>
            <string>4</string>
            <fret>0</fret>
            </frame-note>
          <frame-note>
            <string>3</string>
            <fret>3</fret>
            </frame-note>
          <frame-note>
            <string>2</string>
            <fret>0</fret>
            </frame-note>
          <frame-note>
            <string>1</string>
            <fret>0</fret>
            </frame-note>
          </frame>
        </harmony>
          <frame-note>
            <string>6</string>
            <fret>3</fret>
            </frame-note>
          <frame-note>
            <string>5</string>
            <fret>3</fret>
            </frame-note>
          <frame-note>
            <string>4</string>
            <fret>0</fret>
            </frame-note>
          <frame-note>
            <string>3</string>
            <fret>3</fret>
            </frame-note>
          <frame-note>
            <string>2</string>
            <fret>0</fret>
            </frame-note>
          <frame-note>
            <string>1</string>
            <fret>0</fret>
            </frame-note>
          </frame>
        </harmony>

Supporting files, videos and screenshots

What is the latest version of MuseScore Studio where this issue is present?

4.4.4

Regression

Choose option...

Operating system

Ubuntu

Additional context

No response

Checklist

• This report follows the guidelines for reporting bugs and issues
• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible