chore: enable embedded MongoDB by default for HF Spaces

Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-ARG INCLUDE_DB=false
+ARG INCLUDE_DB=true
 
 FROM node:24-slim AS base
 
@@ -76,7 +76,7 @@ USER user
 FROM local_db_${INCLUDE_DB} AS final
 
 # build arg to determine if the database should be included
-ARG INCLUDE_DB=false
+ARG INCLUDE_DB=true
 ENV INCLUDE_DB=${INCLUDE_DB}
 
 # svelte requires APP_BASE at build time so it must be passed as a build arg