Fix runtime warning reg. missing argument for QString in Palettes

Instead of something like the following:
qsTr("%n thing(s)", "comment", n)

The following was used:
qsTrc("context", "%n thing(s)").arg(n)

Which caused warnings like:
15:35:39.228 | WARN | main_thread | Qt | QString::arg: Argument missing: "Palettes Tree, contains %n palette(s)", 13

Because "%n" doesn't work together with `.arg`.

I updated the translation functions, so that we can now use this:
qsTrc("context", "%n thing(s)", "comment", n)

Which works without warnings.

src/framework/global/translation.cpp

@@ -21,12 +21,12 @@
 
 using namespace mu;
 
-std::string mu::trc(const char* context, const char* key, const char* disambiguation)
+std::string mu::trc(const char* context, const char* key, const char* disambiguation, int n)
 {
-    return QCoreApplication::translate(context, key, disambiguation).toStdString();
+    return QCoreApplication::translate(context, key, disambiguation, n).toStdString();
 }
 
-QString mu::qtrc(const char* context, const char* key, const char* disambiguation)
+QString mu::qtrc(const char* context, const char* key, const char* disambiguation, int n)
 {
-    return QCoreApplication::translate(context, key, disambiguation);
+    return QCoreApplication::translate(context, key, disambiguation, n);
 }

src/framework/global/translation.h

@@ -22,8 +22,8 @@
 #include <QString>
 
 namespace mu {
-std::string trc(const char* context, const char* key, const char* disambiguation = nullptr);
-QString qtrc(const char* context, const char* key, const char* disambiguation = nullptr);
+std::string trc(const char* context, const char* key, const char* disambiguation = nullptr, int n = -1);
+QString qtrc(const char* context, const char* key, const char* disambiguation = nullptr, int n = -1);
 }
 
 #endif // MU_FRAMEWORK_TRANSLATION_H

src/framework/ui/view/qmltranslation.cpp

@@ -27,10 +27,10 @@ QmlTranslation::QmlTranslation(QObject* parent)
 {
 }
 
-QString QmlTranslation::translate(const QString& context, const QString& text, const QString& disambiguation) const
+QString QmlTranslation::translate(const QString& context, const QString& text, const QString& disambiguation, int n) const
 {
     return qtrc(context.toUtf8().constData(),
                 text.toUtf8().constData(),
-                disambiguation.isEmpty() ? nullptr : disambiguation.toUtf8().constData()
-                );
+                disambiguation.isEmpty() ? nullptr : disambiguation.toUtf8().constData(),
+                n);
 }

src/framework/ui/view/qmltranslation.h

@@ -29,7 +29,7 @@ class QmlTranslation : public QObject
 public:
     QmlTranslation(QObject* parent);
 
-    Q_INVOKABLE QString translate(const QString& context, const QString& text,const QString& disambiguation = QString()) const;
+    Q_INVOKABLE QString translate(const QString& context, const QString& text, const QString& disambiguation = QString(), int n = -1) const;
 };
 }
 }

src/palette/qml/MuseScore/Palette/PaletteTree.qml

@@ -29,7 +29,7 @@ import "utils.js" as Utils
 
 ListView {
     id: paletteTree
-    Accessible.name: qsTrc("palette", "Palettes Tree, contains %n palette(s)").arg(count)
+    Accessible.name: qsTrc("palette", "Palettes Tree, contains %n palette(s)", "", count)
 
     activeFocusOnTab: true // allow focus even when empty
 
@@ -46,11 +46,11 @@ ListView {
     property Item currentTreeItem: currentItem // most recently focused item at any level of the tree
 
     property string filter: ""
-    property bool searchOpenned: false
+    property bool searchOpened: false
 
-    onSearchOpennedChanged: {
+    onSearchOpenedChanged: {
         if (paletteWorkspace) {
-            paletteWorkspace.setSearching(searchOpenned)
+            paletteWorkspace.setSearching(searchOpened)
         }
     }
 

src/palette/qml/MuseScore/Palette/PalettesWidget.qml

@@ -87,7 +87,7 @@ Rectangle {
 
         text: qsTrc("palette", "Start typing to search all palettes")
 
-        visible: palettesWidgetHeader.searchOpenned && !Boolean(palettesWidgetHeader.searchText)
+        visible: palettesWidgetHeader.searchOpened && !Boolean(palettesWidgetHeader.searchText)
     }
 
     PaletteTree {
@@ -97,7 +97,7 @@ Rectangle {
 
         filter: palettesWidgetHeader.searchText
         enableAnimations: !palettesWidgetHeader.searching
-        searchOpenned: palettesWidgetHeader.searchOpenned
+        searchOpened: palettesWidgetHeader.searchOpened
 
         anchors {
             top: palettesWidgetHeader.bottom

src/palette/qml/MuseScore/Palette/PalettesWidgetHeader.qml

@@ -32,7 +32,7 @@ Item {
     property PaletteWorkspace paletteWorkspace: null
     property string searchText: searchTextInput.searchText
     readonly property bool searching: searchTextInput.activeFocus
-    property bool searchOpenned: searchTextInput.visible
+    property bool searchOpened: searchTextInput.visible
 
     property alias popupMaxHeight: palettePopup.maxHeight