[release/11.0.1xx-preview3] Copy HotReload dll to intermediate to avoid duplicate identity in multi-client WASM (#53664)

Co-authored-by: Larry Ewing <lewing@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: 3 people

src/WasmSdk/Sdk/Sdk.targets

@@ -28,15 +28,20 @@ Copyright (c) .NET Foundation. All rights reserved.
       <_WasmHotReloadIntermediatePath>$(IntermediateOutputPath)hotreload\</_WasmHotReloadIntermediatePath>
     </PropertyGroup>
 
-    <!-- Copy the JS module to intermediate folder to avoid duplicate identity when multiple projects reference the same SDK file -->
+    <!-- Copy the JS module and DLL to intermediate folder to avoid duplicate identity when multiple projects reference the same SDK file -->
     <Copy
       SourceFiles="$(_WasmHotReloadPath)Microsoft.DotNet.HotReload.WebAssembly.Browser.lib.module.js"
       DestinationFolder="$(_WasmHotReloadIntermediatePath)"
       SkipUnchangedFiles="true"
       Condition="'$(_WasmHotReloadPath)' != ''" />
+    <Copy
+      SourceFiles="$(_WasmHotReloadPath)Microsoft.DotNet.HotReload.WebAssembly.Browser.dll"
+      DestinationFolder="$(_WasmHotReloadIntermediatePath)"
+      SkipUnchangedFiles="true"
+      Condition="'$(_WasmHotReloadPath)' != ''" />
 
     <ItemGroup Condition="'$(_WasmHotReloadPath)' != ''">
-      <ReferenceCopyLocalPaths Include="$(_WasmHotReloadPath)Microsoft.DotNet.HotReload.WebAssembly.Browser.dll">
+      <ReferenceCopyLocalPaths Include="$(_WasmHotReloadIntermediatePath)Microsoft.DotNet.HotReload.WebAssembly.Browser.dll">
         <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
         <CopyToPublishDirectory>Never</CopyToPublishDirectory>
       </ReferenceCopyLocalPaths>
@@ -47,6 +52,7 @@ Copyright (c) .NET Foundation. All rights reserved.
         <OriginalItemSpec>%(Identity)</OriginalItemSpec>
       </_WasmHotReloadModule>
       <FileWrites Include="$(_WasmHotReloadIntermediatePath)Microsoft.DotNet.HotReload.WebAssembly.Browser.lib.module.js" />
+      <FileWrites Include="$(_WasmHotReloadIntermediatePath)Microsoft.DotNet.HotReload.WebAssembly.Browser.dll" />
     </ItemGroup>
 
     <DefineStaticWebAssets