Frontend.XF(.Gtk): replace Gtk workaround with DNF upgrade

Upgrading DotNetForms to pick up a proper bugfix [1] ([2]), instead
of the workaround we added in previous version [3]).

[1] nblockchain/DotNetForms@82e0879
[2] xamarin/Xamarin.Forms#15171
[3] d00e8d8

Author: knocte

src/GWallet.Frontend.XF.Gtk/GWallet.Frontend.XF.Gtk.fsproj

@@ -92,10 +92,10 @@
       <HintPath>..\..\packages\OpenTK.3.0.1\lib\net20\OpenTK.dll</HintPath>
     </Reference>
     <Reference Include="webkit-sharp">
-      <HintPath>..\..\packages\DotNetForms.Platform.GTK.5.0.0.2013--date20220209-1027.git-9383666\lib\net45\webkit-sharp.dll</HintPath>
+      <HintPath>..\..\packages\DotNetForms.Platform.GTK.5.0.0.2015--date20220220-0903.git-82e0879\lib\net45\webkit-sharp.dll</HintPath>
     </Reference>
     <Reference Include="Xamarin.Forms.Platform.GTK">
-      <HintPath>..\..\packages\DotNetForms.Platform.GTK.5.0.0.2013--date20220209-1027.git-9383666\lib\net45\Xamarin.Forms.Platform.GTK.dll</HintPath>
+      <HintPath>..\..\packages\DotNetForms.Platform.GTK.5.0.0.2015--date20220220-0903.git-82e0879\lib\net45\Xamarin.Forms.Platform.GTK.dll</HintPath>
     </Reference>
     <Reference Include="System.Buffers">
       <HintPath>..\..\packages\System.Buffers.4.5.0\lib\netstandard2.0\System.Buffers.dll</HintPath>

src/GWallet.Frontend.XF.Gtk/packages.config

@@ -43,7 +43,7 @@
   <package id="System.Threading.Tasks.Extensions" version="4.5.1" targetFramework="net461" />
   <package id="System.ValueTuple" version="4.5.0" targetFramework="net461" />
   <package id="Xamarin.Forms" version="5.0.0.2012" targetFramework="net471" />
-  <package id="DotNetForms.Platform.GTK" version="5.0.0.2013--date20220209-1027.git-9383666" targetFramework="net471" />
+  <package id="DotNetForms.Platform.GTK" version="5.0.0.2015--date20220220-0903.git-82e0879" targetFramework="net471" />
   <package id="ZXing.Net.Xamarin" version="0.10.0-date20191006-0346.git-18fb927" targetFramework="net461" />
   <package id="ZXing.Net.Xamarin.Forms" version="0.10.0-date20191006-0346.git-18fb927" targetFramework="net461" />
 </packages>

src/GWallet.Frontend.XF/BalancesPage.xaml.fs

@@ -499,13 +499,6 @@ type BalancesPage(state: FrontendHelpers.IGlobalAppState,
             |> ignore
         this.BalanceRefreshCancelSources <- Seq.empty
 
-    override __.OnAppearing() =
-        // workaround for disappearing balance chart when coming back from SendPage. TODO: file bug
-        if Device.RuntimePlatform = Device.GTK then
-            normalChartView.Draw()
-            readonlyChartView.Draw()
-        base.OnAppearing()
-
     member private this.Init () =
         normalChartView.DefaultImageSource <- FrontendHelpers.GetSizedImageSource "logo" 512
         readonlyChartView.DefaultImageSource <- FrontendHelpers.GetSizedImageSource "logo" 512