Fix #307704: Capo settings applied via staff text do not affect chord symbols

Resolves: https://musescore.org/en/node/307704
Backport of musescore#7700

Author: mattmcclinch

libmscore/harmony.cpp

@@ -1272,11 +1272,12 @@ const ChordDescription* Harmony::getDescription(const QString& name, const Parse
 
 const RealizedHarmony& Harmony::getRealizedHarmony()
       {
-      int offset = 0; //semitone offset for pitch adjustment
       Staff* st = staff();
+      int capo = st->capo(tick()) - 1;
+      int offset = (capo < 0 ? 0 : capo);   //semitone offset for pitch adjustment
       Interval interval = st->part()->instrument(tick())->transpose();
       if (!score()->styleB(Sid::concertPitch))
-            offset = interval.chromatic;
+            offset += interval.chromatic;
 
       //Adjust for Nashville Notation, might be temporary
       // TODO: set dirty on add/remove of keysig

libmscore/rendermidi.cpp

@@ -137,7 +137,10 @@ void Score::updateCapo()
       if (!fm)
             return;
       for (Segment* s = fm->first(SegmentType::ChordRest); s; s = s->next1(SegmentType::ChordRest)) {
-            for (const Element* e : s->annotations()) {
+            for (Element* e : s->annotations()) {
+                  if (e->isHarmony()) {
+                        toHarmony(e)->realizedHarmony().setDirty(true);
+                        }
                   if (!e->isStaffTextBase())
                         continue;
                   const StaffTextBase* st = toStaffTextBase(e);