Unable to answer "Do these traffic lights have a tactile indication for blind people for when it’s safe to cross?" – Crossing With Pedestrian Signals – https://osm.org/node/6612395185 via StreetComplete 57.1:

No beg button so no tactile indication here. (Beg button in photo is for crossing Lothian Road)

Attached photo(s):
https://westnordost.de/p/205903.jpg