[SG-1055] Init strength bar color (#2352)

(cherry picked from commit 3780587991)

src/App/Controls/PasswordStrengthProgressBar/PasswordStrengthProgressBar.xaml.cs

@@ -69,6 +69,7 @@ namespace Bit.App.Controls
         {
             InitializeComponent();
             SetBinding(PasswordStrengthProgressBar.PasswordStrengthLevelProperty, new Binding() { Path = nameof(PasswordStrengthViewModel.PasswordStrengthLevel) });
+            UpdateColors();
         }
 
         private static void OnControlPropertyChanged(BindableObject bindable, object oldValue, object newValue)