Downgrade EF Core and Mvc.NewtonsoftJson to match working state

Downgraded to match the working commit (8041787):
- Microsoft.EntityFrameworkCore.InMemory: 10.0.0 → 9.0.11
- Microsoft.AspNetCore.Mvc.NewtonsoftJson: 10.0.0 → 9.0.11

These packages must remain at 9.0.x to be compatible with Microting packages which use EF Core 9.0.x.

Co-authored-by: renemadsen <[email protected]>

Author: Copilot

eFormAPI/eFormAPI.Web/eFormAPI.Web.csproj

@@ -52,8 +52,8 @@
     <PackageReference Include="HtmlToOpenXml.dll" Version="3.2.8" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="10.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="10.0.0" />
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="10.0.0" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="10.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="9.0.11" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.11" />
     <PackageReference Include="Microsoft.Extensions.PlatformAbstractions" Version="1.1.0" />
     <PackageReference Include="Microting.eForm" Version="9.0.72" />
     <PackageReference Include="Microting.EformAngularFrontendBase" Version="9.0.59" />