build: build `angular-in-memory-web-api` when building packages with Ivy (#41429)
build: build `angular-in-memory-web-api` when building packages with Ivy (#41429)

This commit updates the `build-ivy-npm-packages.js` script to also build
the `angular-in-memory-web-api` package. This could be used if someone
wanted to test the Ivy packages in docs examples or an integration test.

PR Close #41429

shairez/angular,ocombe/angular,JiaLiPassion/angular,angular/angular,shairez/angular,gkalpak/angular,gnomeontherun/angular,angular-indonesia/angular,manekinekko/angular,angular-indonesia/angular,manekinekko/angular,angular-indonesia/angular,gnomeontherun/angular,shairez/angular,ocombe/angular,gnomeontherun/angular,mgechev/angular,ocombe/angular,brandonroberts/angular,angular-indonesia/angular,shairez/angular,brandonroberts/angular,angular/angular,angular/angular,JiaLiPassion/angular,JiaLiPassion/angular,ocombe/angular,brandonroberts/angular,brandonroberts/angular,shairez/angular,brandonroberts/angular,gkalpak/angular,mgechev/angular,gkalpak/angular,manekinekko/angular,ocombe/angular,ocombe/angular,manekinekko/angular,manekinekko/angular,mgechev/angular,gkalpak/angular,angular/angular,JiaLiPassion/angular,manekinekko/angular,gnomeontherun/angular,brandonroberts/angular,mgechev/angular,mgechev/angular