message: fix(shell-api): relax sharding test expectations
  Relax the test expectations to account for upcoming changes in 6.0.
diff: @@ -1529,7 +1529,8 @@ describe('Shard', () => {
  const databasesDbItem = result.value.databases.find((item) => (item.database._id === 'db'));
  expect(databasesDbItem.database.partitioned).to.equal(false);
  const databasesDbShItem = result.value.databases.find((item) => (item.database._id === 'dbSh'));
  - expect(databasesDbShItem.database.partitioned).to.equal(true);
  + // Cannot get strict guarantees about the value of this field since SERVER-60926
  + expect(databasesDbShItem.database.partitioned).to.be.a('boolean');
  });
  });
  });
  