[risk=no] Don't populate signInStore when not signed in (#2854)
[risk=no] Don't populate signInStore when not signed in (#2854)


all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench