fix(test): rewrite normalise_indian_name -- add Sh. to honorifics, while-loop for stacked honorifics, fix broken function body

fix(test): add 'sh' abbreviation to _HONORIFICS; change to while-loop for stacked honorifics (Late Shri X -> X) -- fixes 1 failing pytest

feat(processing): add EntityResolverV2 -- multi-signal identity engine