docs(bazel): improve error message for ng_package with no metadata (#22964)
docs(bazel): improve error message for ng_package with no metadata (#22964)

PR Close #22964

gkalpak/angular,hansl/angular,mzgol/angular,blesh/angular,vicb/angular,gnomeontherun/angular,IdeaBlade/angular,JiaLiPassion/angular,angular-indonesia/angular,mgechev/angular,Brocco/angular,manekinekko/angular,angular-indonesia/angular,manekinekko/angular,kegluneq/angular,matsko/angular,brandonroberts/angular,heathkit/angular,filipesilva/angular,gdi2290/angular,alxhub/angular,kegluneq/angular,StephenFluin/angular,filipesilva/angular,juristr/angular,vicb/angular,vikerman/angular,mzgol/angular,hansl/angular,Brocco/angular,gdi2290/angular,juristr/angular,vikerman/angular,JiaLiPassion/angular,IdeaBlade/angular,filipesilva/angular,petebacondarwin/angular,alexeagle/angular,IgorMinar/angular,mzgol/angular,mprobst/angular,angular-indonesia/angular,ocombe/angular,snaptech/angular,mgol/angular,kegluneq/angular,juristr/angular,mgechev/angular,brandonroberts/angular,gkalpak/angular,Toxicable/angular,mlaval/angular,alexeagle/angular,shairez/angular,StephenFluin/angular,filipesilva/angular,juristr/angular,mgol/angular,ocombe/angular,JiaLiPassion/angular,NathanWalker/angular,alexeagle/angular,sarunint/angular,NathanWalker/angular,kara/angular,mprobst/angular,alexeagle/angular,angular/angular,ultrasonicsoft/angular,StephenFluin/angular,Toxicable/angular,brandonroberts/angular,NathanWalker/angular,blesh/angular,wKoza/angular,shairez/angular,mlaval/angular,snaptech/angular,mzgol/angular,mlaval/angular,gnomeontherun/angular,snaptech/angular,blesh/angular,mgiambalvo/angular,kegluneq/angular,brandonroberts/angular,jonrimmer/angular,gkalpak/angular,angular/angular,ultrasonicsoft/angular,ocombe/angular,IgorMinar/angular,sarunint/angular,jasonaden/angular,snaptech/angular,jonrimmer/angular,mgechev/angular,filipesilva/angular,jonrimmer/angular,IgorMinar/angular,petebacondarwin/angular,mhevery/angular,vicb/angular,blesh/angular,mgol/angular,mlaval/angular,alxhub/angular,NathanWalker/angular,mgol/angular,vikerman/angular,IdeaBlade/angular,ocombe/angular,petebacondarwin/angular,StephenFluin/angular,mprobst/angular,hansl/angular,IgorMinar/angular,wKoza/angular,vicb/angular,kara/angular,ValtoFrameworks/Angular-2,vicb/angular,mgechev/angular,matsko/angular,gkalpak/angular,petebacondarwin/angular,petebacondarwin/angular,angular/angular,wKoza/angular,shairez/angular,sarunint/angular,heathkit/angular,Toxicable/angular,alxhub/angular,vikerman/angular,manekinekko/angular,matsko/angular,trshafer/angular,heathkit/angular,hansl/angular,angular/angular,IgorMinar/angular,brandonroberts/angular,mprobst/angular,kegluneq/angular,Toxicable/angular,mhevery/angular,mgiambalvo/angular,mprobst/angular,jonrimmer/angular,Toxicable/angular,Brocco/angular,mgiambalvo/angular,gnomeontherun/angular,snaptech/angular,trshafer/angular,Brocco/angular,Brocco/angular,mgiambalvo/angular,kara/angular,ValtoFrameworks/Angular-2,snaptech/angular,sarunint/angular,mgechev/angular,mhevery/angular,hansl/angular,jasonaden/angular,wKoza/angular,mhevery/angular,mprobst/angular,heathkit/angular,jasonaden/angular,ultrasonicsoft/angular,gdi2290/angular,NathanWalker/angular,gnomeontherun/angular,juristr/angular,ultrasonicsoft/angular,kara/angular,mgol/angular,StephenFluin/angular,NathanWalker/angular,alexeagle/angular,ValtoFrameworks/Angular-2,manekinekko/angular,gdi2290/angular,ValtoFrameworks/Angular-2,heathkit/angular,gdi2290/angular,mzgol/angular,trshafer/angular,ocombe/angular,vikerman/angular,jonrimmer/angular,Brocco/angular,mzgol/angular,jasonaden/angular,JiaLiPassion/angular,sarunint/angular,alxhub/angular,ultrasonicsoft/angular,shairez/angular,vikerman/angular,mhevery/angular,heathkit/angular,matsko/angular,mgiambalvo/angular,jasonaden/angular,vicb/angular,gdi2290/angular,IgorMinar/angular,ultrasonicsoft/angular,mlaval/angular,alexeagle/angular,juristr/angular,ocombe/angular,jonrimmer/angular,trshafer/angular,sarunint/angular,IdeaBlade/angular,hansl/angular,manekinekko/angular,kegluneq/angular,manekinekko/angular,trshafer/angular,angular-indonesia/angular,brandonroberts/angular,shairez/angular,kara/angular,mgol/angular,blesh/angular,Toxicable/angular,petebacondarwin/angular,kara/angular,wKoza/angular,ValtoFrameworks/Angular-2,wKoza/angular,jasonaden/angular,alxhub/angular,IdeaBlade/angular,mhevery/angular,trshafer/angular,matsko/angular