Compute _WebAssemblyUserRunParameters before default run params apply

Author: maraf

src/WasmSdk/Sdk/Sdk.targets

@@ -10,6 +10,10 @@ Copyright (c) .NET Foundation. All rights reserved.
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 -->
 <Project ToolsVersion="14.0">
+  <PropertyGroup>
+    <_WebAssemblyUserRunParameters>$(RunCommand)$(RunArguments)$(RunWorkingDirectory)</_WebAssemblyUserRunParameters>
+  </PropertyGroup>
+  
   <Import Sdk="Microsoft.NET.Sdk.StaticWebAssets" Project="Sdk.targets" Condition="'$(_WasmSdkImportsMicrosoftNETSdkStaticWebAssets)' == 'true'" />
   <Import Sdk="Microsoft.NET.Sdk.Publish" Project="Sdk.targets" Condition="'$(_WasmSdkImportsMicrosoftNETSdkPublish)' == 'true'" />
   <Import Project="$(_WebAssemblyTargetsFile)" Condition="'$(_WebAssemblyTargetsFile)' != ''" />