Make QuicToyServer support all IETF drafts
Make QuicToyServer support all IETF drafts

cl/299245199 changed how QuicToyServer handles versions, but that CL forgot to remove the break statement to allow supporting all IETF drafts. This CL fixes that oversight.

gfe-relnote: n/a, test-only
PiperOrigin-RevId: 299892903
Change-Id: Ib3fc9191f6bdd556575baee8dd7e611725285c09

google/quiche,google/quiche,google/quiche,google/quiche