Bump @angular/router from 20.3.13 to 21.0.0 in /web_embedding/ng-flutter#2751

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dependabot/npm_and_yarn/web_embedding/ng-flutter/angular/router-21.0.0flutter/samples:dependabot/npm_and_yarn/web_embedding/ng-flutter/angular/router-21.0.0Copy head branch name to clipboard