build(zone.js): sets rollup_bundle to use the --silent flag (#35835)
build(zone.js): sets rollup_bundle to use the --silent flag (#35835)

Using the --silent flag prevents the spammy logging messages in the
bazel execution logs.

```
INFO: From Bundling JavaScript packages/zone.js/dist/zone-rollup.umd.js [rollup]:

bazel-out/k8-fastbuild/bin/packages/zone.js/lib/browser/rollup-legacy-main.mjs → bazel-out/k8-fastbuild/bin/packages/zone.js/dist/zone-rollup.umd.js...
created bazel-out/k8-fastbuild/bin/packages/zone.js/dist/zone-rollup.umd.js in 736ms
```

PR Close #35835

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