Fix GodotTools.ProjectEditor HintPaths for referenced packages

modules/mono/editor/GodotTools/GodotTools.ProjectEditor/GodotTools.ProjectEditor.csproj

@@ -37,9 +37,8 @@
       entire solution. $(SolutionDir) is not defined in that case, so we need to workaround that.
       We make SCons restore the NuGet packages in the project directory instead in this case.
       -->
-      <HintPath Condition=" '$(SolutionDir)' != '' ">$(SolutionDir)\packages\DotNet.Glob.2.1.1\lib\net45\DotNet.Glob.dll</HintPath>
-      <HintPath>$(ProjectDir)\packages\DotNet.Glob.2.1.1\lib\net45\DotNet.Glob.dll</HintPath>
-      <HintPath>packages\DotNet.Glob.2.1.1\lib\net45\DotNet.Glob.dll</HintPath> <!-- Are you happy CI? -->
+      <HintPath Condition=" '$(SolutionDir)' != '' And Exists('$(SolutionDir)\packages\DotNet.Glob.2.1.1\lib\net45\DotNet.Glob.dll') ">$(SolutionDir)\packages\DotNet.Glob.2.1.1\lib\net45\DotNet.Glob.dll</HintPath>
+      <HintPath Condition=" '$(SolutionDir)' == '' Or !Exists('$(SolutionDir)\packages\DotNet.Glob.2.1.1\lib\net45\DotNet.Glob.dll') ">$(ProjectDir)\packages\DotNet.Glob.2.1.1\lib\net45\DotNet.Glob.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>