LibSqlClient.openSimpleConnection: include Bearer auth token

[IceboxDev]

LibSqlClient.executeBatch includes the Authorization: Bearer <token> header when an auth token is configured, but openSimpleConnection (used by LibSqlDatabaseMetaData.readServerVersion to hit /version) does not. Against any libSQL server that requires authentication on every request (notably Turso's managed service) this returns 401 Unauthorized, so getDatabaseProductName() / getDatabaseProductVersion() fail.

Reproduction (Turso):

curl -i https://<turso-host>/version
# HTTP/1.1 401 Unauthorized
curl -i -H "Authorization: Bearer $TOKEN" https://<turso-host>/version
# HTTP/1.1 200 OK   (or 404 ? see follow-up PR for the 404 path)

Fix: mirror executeBatch's auth-header logic in openSimpleConnection.

[codacy-production]

Up to standards ✅

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[LonwoLonwo]

Thanks @IceboxDev

We will take a look.

[labanovichttps]

@IceboxDev could you please fix your commit message?
https://docs.github.com/en/pull-requests/committing-changes-to-your-project/creating-and-editing-commits/changing-a-commit-message#amending-older-or-multiple-commit-messages