test: update ngtsc specs to work with es2015 output (#44505)
test: update ngtsc specs to work with es2015 output (#44505)

Updates the ngtsc specs to work with ES2015 output.

PR Close #44505

shairez/angular,ocombe/angular,manekinekko/angular,angular/angular,shairez/angular,manekinekko/angular,ocombe/angular,gnomeontherun/angular,angular/angular,manekinekko/angular,gkalpak/angular,gnomeontherun/angular,angular-indonesia/angular,angular-indonesia/angular,manekinekko/angular,ocombe/angular,gkalpak/angular,shairez/angular,angular-indonesia/angular,gnomeontherun/angular,angular-indonesia/angular,angular/angular,gkalpak/angular,gnomeontherun/angular,manekinekko/angular,shairez/angular,angular/angular,JiaLiPassion/angular,JiaLiPassion/angular,manekinekko/angular,ocombe/angular,ocombe/angular,gkalpak/angular,shairez/angular,JiaLiPassion/angular,JiaLiPassion/angular,ocombe/angular