Fix compute masking on TAB staff settings preview (#27425)

Author: mike-spa

src/engraving/rendering/iscorerenderer.h

@@ -196,6 +196,8 @@ class IScoreRenderer : MODULE_EXPORT_INTERFACE
     virtual void computeBezier(TieSegment* tieSeg, PointF shoulderOffset = PointF()) = 0;
     virtual void computeBezier(SlurSegment* slurSeg, PointF shoulderOffser = PointF()) = 0;
 
+    virtual void computeMasks(Score* score) = 0;
+
 private:
     // Layout Single Item
     virtual void doLayoutItem(EngravingItem* item) = 0;

src/engraving/rendering/score/scorerenderer.cpp

@@ -35,6 +35,7 @@
 #include "arpeggiolayout.h"
 #include "horizontalspacing.h"
 #include "slurtielayout.h"
+#include "masklayout.h"
 
 #include "paint.h"
 
@@ -102,6 +103,14 @@ void ScoreRenderer::computeBezier(SlurSegment* slurSeg, PointF shoulderOffset)
     SlurTieLayout::computeBezier(slurSeg, shoulderOffset);
 }
 
+void ScoreRenderer::computeMasks(Score* score)
+{
+    LayoutContext ctx(score);
+    for (Page* page : score->pages()) {
+        MaskLayout::computeMasks(ctx, page);
+    }
+}
+
 void ScoreRenderer::layoutTextLineBaseSegment(TextLineBaseSegment* item)
 {
     LayoutContext ctx(item->score());

src/engraving/rendering/score/scorerenderer.h

@@ -53,6 +53,8 @@ class ScoreRenderer : public IScoreRenderer
     void computeBezier(TieSegment* tieSeg, PointF shoulderOffset = PointF()) override;
     void computeBezier(SlurSegment* slurSeg, PointF shoulderOffset = PointF()) override;
 
+    void computeMasks(Score* score) override;
+
 private:
     // Layout Single Item
     void doLayoutItem(EngravingItem* item) override;

src/notation/view/widgets/editstafftype.cpp

@@ -618,8 +618,10 @@ void EditStaffType::updatePreview()
         preview = standardPreview;
     }
     if (preview) {
-        preview->score()->staff(0)->setStaffType(mu::engraving::Fraction(0, 1), staffType);
-        preview->score()->doLayout();
+        Score* score = preview->score();
+        score->staff(0)->setStaffType(mu::engraving::Fraction(0, 1), staffType);
+        score->doLayout();
+        score->renderer()->computeMasks(score);
         preview->updateAll();
         preview->update();
     }