macdeployqt: Detect debug dylibs, not just debug frameworks

A debug dylib has a binary name like libQt6Core_debug.6.dylib

Pick-to: 6.5
Change-Id: I54a7a7017b880c734777d0738acf46c19689148d
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>

src/tools/macdeployqt/shared/shared.h

@@ -37,7 +37,10 @@ public:
 
     bool isDebugLibrary() const
     {
-        return binaryName.endsWith(QStringLiteral("_debug"));
+        if (isDylib)
+            return binaryName.contains(QStringLiteral("_debug."));
+        else
+            return binaryName.endsWith(QStringLiteral("_debug"));
     }
 };