feat(database): disable eager collection creation for all schemas

[ChrisPdgn]

Summary

• Set autoCreate: false and autoIndex: false on every Mongoose schema in the database adapter, not just views.
• Collections are now created lazily on first write instead of at schema registration time, reducing empty collections on shared dev MongoDB clusters.
• Index creation remains handled explicitly by Conduit's createIndexes() during schema registration.

Test plan

• Start Conduit with MongoDB and register schemas that have no custom indexes; verify no empty collections are created until the first document insert.
• Register a schema with custom indexes and confirm indexes are still created correctly.
• Run findMany / findOne against a schema whose collection has not been created yet and confirm empty results are returned without errors.
• Verify view schemas still behave correctly.