Fix various TS templates

[bradleyshep]

Description of Changes

Fix withModuleName -> withDatabaseName in server-side code across multiple TypeScript templates. The 2.0 SDK renamed this method, but several templates still used the old 1.x API name, causing a runtime error (DbConnection.builder(...).withUri(...).withModuleName is not a function).

Files changed:

• templates/nuxt-ts/server/api/people.get.ts
• templates/remix-ts/app/lib/spacetimedb.server.ts
• templates/nextjs-ts/lib/spacetimedb-server.ts
• templates/nodejs-ts/src/main.ts
• templates/deno-ts/src/main.ts
• templates/keynote-2/src/connectors/spacetimedb.ts

API and ABI breaking changes

None. This aligns templates with the existing 2.0 SDK API.

Expected complexity level and risk

1 — Trivial string replacement across template files. No logic changes.

Testing

• Run spacetime dev --template nuxt-ts and verify the Nuxt SSR server API (/api/people) connects without withModuleName is not a function error
• Run spacetime dev --template nextjs-ts and verify the server-side SpacetimeDB connection works
• Run spacetime dev --template remix-ts and verify the server-side SpacetimeDB connection works

[clockwork-tien]

Nuxt changes looks good from my testing (edit: I just now noticed template issue re tables e.g. for Nuxt potentially with recent module_bindings/api updates, but it is unrelated to PR)