Add missing email-api-data project to email-api Dockerfile

The email-api.csproj references email-api-data as a project dependency,
but the Dockerfile was not copying it into the build context. This caused
'Skipping project' warnings during restore/publish.

Added COPY commands for both .csproj (before restore) and source directory
(before publish) to include email-api-data in the Docker build.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Apis/email-api/Dockerfile

@@ -3,6 +3,7 @@ ARG BUILD_CONFIGURATION=Release
 WORKDIR /src
 
 COPY Apis/email-api/email-api.csproj Apis/email-api/
+COPY Apis/email-api-data/email-api-data.csproj Apis/email-api-data/
 COPY Apis/email-api-models/email-api-models.csproj Apis/email-api-models/
 COPY Apis/api-models/api-models.csproj Apis/api-models/
 COPY Apis/common/common.csproj Apis/common/
@@ -13,6 +14,7 @@ COPY Directory.Packages.props ./
 RUN dotnet restore Apis/email-api/email-api.csproj
 
 COPY Apis/email-api/ Apis/email-api/
+COPY Apis/email-api-data/ Apis/email-api-data/
 COPY Apis/email-api-models/ Apis/email-api-models/
 COPY Apis/api-models/ Apis/api-models/
 COPY Apis/common/ Apis/common/