fix(build): unblock 1.39.0 Release packages build (NETSDK1047 in JsonRpc source generator) (#12341)

fix(build): keep RPC JSON source generator portable in self-contained RID publish

scripts/build/build.sh publishes with -r <rid> --sc; those CLI global
properties (RuntimeIdentifier, SelfContained, PublishSingleFile,
IncludeAllContentForSelfExtract) leak into the RID-less
Nethermind.JsonRpc.SourceGenerator[.Build] tool builds, which then fail
with NETSDK1047 (no net10.0/<rid> target in project.assets.json).

First hit on the 1.39.0 Release run: the packages path had not executed
since #11697 introduced the generator (1.38.1 predates it). The Docker
image path is unaffected because it publishes framework-dependent
without -r.

Fix: strip those properties from the generator ProjectReferences
(UndefineProperties + GlobalPropertiesToRemove) and from the inner
<MSBuild> invocations (RemoveProperties) so the tool always builds and
runs as a portable framework-dependent app - required anyway for the
cross-RID legs (win/osx) where the generator must execute on the Linux
build host.

Verified in the CI SDK container (10.0.301-resolute): pristine tree
reproduces NETSDK1047 on 'publish -r linux-x64 --sc'; patched tree
publishes successfully and the produced binary runs.

Author: stdevMac

src/Nethermind/Directory.Build.targets

@@ -17,8 +17,8 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(GenerateRpcJsonContext)' == 'true'">
-    <ProjectReference Include="$(MSBuildThisFileDirectory)Nethermind.JsonRpc.SourceGenerator\Nethermind.JsonRpc.SourceGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" PrivateAssets="all" GlobalPropertiesToRemove="GenerateRpcJsonContext" />
-    <ProjectReference Include="$(MSBuildThisFileDirectory)Nethermind.JsonRpc.SourceGenerator.Build\Nethermind.JsonRpc.SourceGenerator.Build.csproj" ReferenceOutputAssembly="false" PrivateAssets="all" GlobalPropertiesToRemove="GenerateRpcJsonContext" />
+    <ProjectReference Include="$(MSBuildThisFileDirectory)Nethermind.JsonRpc.SourceGenerator\Nethermind.JsonRpc.SourceGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" PrivateAssets="all" GlobalPropertiesToRemove="GenerateRpcJsonContext;RuntimeIdentifier;SelfContained;PublishSingleFile;IncludeAllContentForSelfExtract" UndefineProperties="RuntimeIdentifier;SelfContained;PublishSingleFile;IncludeAllContentForSelfExtract" />
+    <ProjectReference Include="$(MSBuildThisFileDirectory)Nethermind.JsonRpc.SourceGenerator.Build\Nethermind.JsonRpc.SourceGenerator.Build.csproj" ReferenceOutputAssembly="false" PrivateAssets="all" GlobalPropertiesToRemove="GenerateRpcJsonContext;RuntimeIdentifier;SelfContained;PublishSingleFile;IncludeAllContentForSelfExtract" UndefineProperties="RuntimeIdentifier;SelfContained;PublishSingleFile;IncludeAllContentForSelfExtract" />
   </ItemGroup>
 
   <Target Name="_GenerateRpcJsonSerializerContext"
@@ -42,13 +42,15 @@
     <MSBuild Projects="$(_RpcJsonContextGeneratorProject)"
       Targets="GetTargetPath"
       Properties="Configuration=$(_RpcJsonContextGeneratorConfiguration);GenerateRpcJsonContext=false"
+      RemoveProperties="RuntimeIdentifier;SelfContained;PublishSingleFile;IncludeAllContentForSelfExtract"
       BuildInParallel="false">
       <Output TaskParameter="TargetOutputs" PropertyName="_RpcJsonContextGeneratorPath" />
     </MSBuild>
 
     <MSBuild Projects="$(_RpcJsonContextGeneratorProject)"
       Targets="Build"
       Properties="Configuration=$(_RpcJsonContextGeneratorConfiguration);GenerateRpcJsonContext=false"
+      RemoveProperties="RuntimeIdentifier;SelfContained;PublishSingleFile;IncludeAllContentForSelfExtract"
       BuildInParallel="false"
       Condition="!Exists('$(_RpcJsonContextGeneratorPath)')" />