Remove the legacy hack to have fielsdToFetch working after the merge of d2a2fd94bfcef8360805b46a1692ba7eb84fbe1c. Add addtionalClasses of m2m tags to get the correct style. closes odoo/odoo#101833 X-original-commit: ff4d5c1bca0b3af95d4f856ebc424f1b31ba5147 Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>