Fix flickering when first marking a track as next

Pre-create the infotabs as adding the first one caused the flicker.

app/infotabs.py

@@ -21,6 +21,14 @@ class InfoTabs(QTabWidget):
         # re-use the oldest one later)
         self.last_update: Dict[QWebEngineView, datetime] = {}
         self.tabtitles: Dict[int, str] = {}
+        count = Config.MAX_INFO_TABS
+        while count:
+            widget = QWebEngineView()
+            widget.setZoomFactor(Config.WEB_ZOOM_FACTOR)
+            self.last_update[widget] = datetime.now()
+            tab_index = self.addTab(widget, "")
+            count -= 1
+
 
     def open_in_songfacts(self, title):
         """Search Songfacts for title"""

app/musicmuster.py

@@ -1637,7 +1637,7 @@ class Window(QMainWindow, Ui_MainWindow):
                 # because it isn't quick
                 if self.next_track.title:
                     QTimer.singleShot(
-                        1,
+                        0,
                         lambda: self.tabInfolist.open_in_wikipedia(
                             self.next_track.title
                         ),

app/ui/main_window.ui

@@ -363,6 +363,9 @@ padding-left: 8px;</string>
        <property name="movable">
         <bool>true</bool>
        </property>
+       <property name="tabBarAutoHide">
+        <bool>false</bool>
+       </property>
       </widget>
      </widget>
     </item>

app/ui/main_window_ui.py

@@ -1,6 +1,6 @@
 # Form implementation generated from reading ui file 'app/ui/main_window.ui'
 #
-# Created by: PyQt6 UI code generator 6.5.1
+# Created by: PyQt6 UI code generator 6.5.2
 #
 # WARNING: Any manual changes made to this file will be lost when pyuic6 is
 # run again.  Do not edit this file unless you know what you are doing.
@@ -183,6 +183,7 @@ class Ui_MainWindow(object):
         self.tabInfolist.setDocumentMode(False)
         self.tabInfolist.setTabsClosable(True)
         self.tabInfolist.setMovable(True)
+        self.tabInfolist.setTabBarAutoHide(False)
         self.tabInfolist.setObjectName("tabInfolist")
         self.gridLayout_4.addWidget(self.splitter, 4, 0, 1, 1)
         self.InfoFooterFrame = QtWidgets.QFrame(parent=self.centralwidget)