fix(ngcc): rename the executable from ivy-ngcc to ngcc (#33140)

Previously, the executable for the Angular Compatibility Compiler
(`ngcc`) was called `ivy-ngcc`. This would be confusing for users not
familiar with our internal terminology, especially given that we call it
`ngcc` in all our docs and presentations.

This commit renames the executable to `ngcc` and replaces `ivy-ngcc`
with a script that errors with an informative message (prompting the
user to use `ngcc` instead).

Jira issue: [FW-1624](https://angular-team.atlassian.net/browse/FW-1624)

PR Close #33140

integration/cli-hello-world-ivy-compat/package.json

@@ -7,7 +7,7 @@
     "e2e": "ng e2e --webdriver-update=false",
     "lint": "ng lint",
     "ng": "ng",
-    "postinstall": "yarn update-webdriver && yarn ivy-ngcc --properties es2015 --create-ivy-entry-points",
+    "postinstall": "yarn update-webdriver && yarn ngcc --properties es2015 --create-ivy-entry-points",
     "update-webdriver": "webdriver-manager update --gecko=false --standalone=false $CI_CHROMEDRIVER_VERSION_ARG",
     "start": "ng serve",
     "pretest": "ng version",