fix: use @libsql/client/http subpath to avoid native module deps

The main @libsql/client entry point pulls in the native libsql module
and isomorphic-ws/isomorphic-fetch, which webpack cannot parse in
EdgeOne builds. Using the http subpath provides a pure HTTP client
that works in edge/serverless environments without native dependencies.

Also add libsql, @libsql/isomorphic-fetch, @libsql/isomorphic-ws to
the edge build alias list in next.config.js as a safety net.

next.config.js

@@ -104,6 +104,9 @@ const createNextConfig = (phase) => {
             'redis',
             '@vercel/postgres',
             'pg',
+            'libsql',
+            '@libsql/isomorphic-fetch',
+            '@libsql/isomorphic-ws',
           ].map((pkg) => [
             pkg,
             path.resolve(