Add setting to avoid shrinking pinned tabs

qutebrowser/config/configdata.yml

@@ -1358,6 +1358,11 @@ tabs.indicator.padding:
 tabs.width.pinned:
   deleted: true
 
+tabs.pinned.shrink:
+  default: true
+  type: Bool
+  desc: Shrink pinned tabs down to their contents.
+
 tabs.wrap:
   default: true
   type: Bool

qutebrowser/mainwindow/tabwidget.py

@@ -565,8 +565,12 @@ class TabBar(QTabBar):
             # want to ensure it's valid in this special case.
             return QSize()
         else:
+            if config.val.tabs.pinned.shrink:
                 pinned = self._tab_pinned(index)
                 pinned_count, pinned_width = self._pinned_statistics()
+            else:
+                pinned = False
+                pinned_count, pinned_width = (0, 0)
             no_pinned_count = self.count() - pinned_count
             no_pinned_width = self.width() - pinned_width