In light of #29926, that will change the path of `tsconfig.app.json`, this commit switches from a hard-coded `tsconfig.app.json` path to looking it up in `angular.json` (to be more future-proof). PR Close #29989
In light of #29926, that will change the path of `tsconfig.app.json`, this commit switches from a hard-coded `tsconfig.app.json` path to looking it up in `angular.json` (to be more future-proof). PR Close #29989