[backport] Avoid overeager completion of Java annotations in classfile parser#15277

Merged

Kordyjan merged 1 commit intoscala:release-3.1.3from

griggt:bport-fix-15166

May 24, 2022

Commits on May 23, 2022

Require seeing `ScalaSig` before scanning for Scala pickling annotations
griggt
committed