Make balance text in statusBar selectable

gui/qt/main_window.py

@@ -1748,6 +1748,8 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         qtVersion = qVersion()
 
         self.balance_label = QLabel("")
+        self.balance_label.setTextInteractionFlags(Qt.TextSelectableByMouse)
+        self.balance_label.setStyleSheet("""QLabel { padding: 0 }""")
         sb.addWidget(self.balance_label)
 
         self.search_box = QLineEdit()