refactor: make pseudo elements array readonly (#31248)
refactor: make pseudo elements array readonly (#31248)

PR Close #31248

gdi2290/angular,Toxicable/angular,Brocco/angular,Brocco/angular,gkalpak/angular,ocombe/angular,filipesilva/angular,wKoza/angular,ocombe/angular,Brocco/angular,sarunint/angular,blesh/angular,manekinekko/angular,snaptech/angular,shairez/angular,filipesilva/angular,gnomeontherun/angular,Toxicable/angular,mhevery/angular,angular-indonesia/angular,sarunint/angular,matsko/angular,wKoza/angular,gdi2290/angular,brandonroberts/angular,Brocco/angular,IdeaBlade/angular,matsko/angular,mgechev/angular,alxhub/angular,mprobst/angular,JiaLiPassion/angular,brandonroberts/angular,snaptech/angular,gkalpak/angular,vikerman/angular,wKoza/angular,StephenFluin/angular,Brocco/angular,angular/angular,blesh/angular,mhevery/angular,brandonroberts/angular,angular-indonesia/angular,shairez/angular,vikerman/angular,Toxicable/angular,gnomeontherun/angular,alxhub/angular,filipesilva/angular,brandonroberts/angular,gdi2290/angular,blesh/angular,gdi2290/angular,blesh/angular,IdeaBlade/angular,brandonroberts/angular,vikerman/angular,vikerman/angular,shairez/angular,StephenFluin/angular,gkalpak/angular,mprobst/angular,JiaLiPassion/angular,StephenFluin/angular,mhevery/angular,alxhub/angular,sarunint/angular,gkalpak/angular,mprobst/angular,vikerman/angular,mprobst/angular,wKoza/angular,angular/angular,mgechev/angular,gnomeontherun/angular,mhevery/angular,gnomeontherun/angular,IdeaBlade/angular,snaptech/angular,mprobst/angular,filipesilva/angular,matsko/angular,matsko/angular,matsko/angular,IdeaBlade/angular,snaptech/angular,wKoza/angular,mhevery/angular,Brocco/angular,ocombe/angular,mgechev/angular,filipesilva/angular,vikerman/angular,snaptech/angular,ocombe/angular,manekinekko/angular,manekinekko/angular,sarunint/angular,manekinekko/angular,Toxicable/angular,mgechev/angular,snaptech/angular,mhevery/angular,wKoza/angular,shairez/angular,angular/angular,shairez/angular,ocombe/angular,IdeaBlade/angular,sarunint/angular,alxhub/angular,angular-indonesia/angular,mgechev/angular,JiaLiPassion/angular,mprobst/angular,Toxicable/angular,gdi2290/angular,manekinekko/angular,blesh/angular,brandonroberts/angular,ocombe/angular,angular-indonesia/angular,alxhub/angular,manekinekko/angular,sarunint/angular,gdi2290/angular,Toxicable/angular,StephenFluin/angular,angular/angular,StephenFluin/angular,JiaLiPassion/angular