build-dotnet-module: add useAppHost parameter so it can be disabled

pkgs/build-support/dotnet/build-dotnet-module/default.nix

···
 , buildType ? "Release"
   # If set to true, builds the application as a self-contained - removing the runtime dependency on dotnet
 , selfContainedBuild ? false
+  # Whether to explicitly enable UseAppHost when building
+, useAppHost ? true
   # The dotnet SDK to use.
 , dotnet-sdk ? dotnetCorePackages.sdk_6_0
   # The dotnet runtime to use.
···
 
   # gappsWrapperArgs gets included when wrapping for dotnet, as to avoid double wrapping
   dontWrapGApps = args.dontWrapGApps or true;
+
+  inherit selfContainedBuild useAppHost;
 
   passthru = {
     inherit nuget-source;

pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-build-hook.sh

···
         dotnetBuildFlags+=("-p:SelfContained=false")
     fi
 
+    if [ "${useAppHost-}" ]; then
+        dotnetBuildFlags+=("-p:UseAppHost=true")
+    fi
+
     if [ "${version-}" ]; then
         local -r versionFlag="-p:Version=${version-}"
     fi
···
             -p:BuildInParallel=$parallelBuildFlag \
             -p:ContinuousIntegrationBuild=true \
             -p:Deterministic=true \
-            -p:UseAppHost=true \
             --configuration "@buildType@" \
             --no-restore \
             ${versionFlag-} \

pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-install-hook.sh

···
         dotnetInstallFlags+=("--no-self-contained")
     fi
 
+    if [ "${useAppHost-}" ]; then
+        dotnetInstallFlags+=("-p:UseAppHost=true")
+    fi
+
     dotnetPublish() {
         local -r project="${1-}"
         env dotnet publish ${project-} \