clean previous ngcc ivy entrpoints works when running ng update

🚀 Feature request

Command

• serve
• update

Description

Actually updating a project with ng update is not straightforward, if an update exist it update package.json versions and run npm i correctly. But now running ng serve always throw this known error:

ERROR in The ngcc compiler has changed since the last ngcc build. Please remove “C:/Users/e…/ngcc-has-changed/node_modules” and try again.

Here we realize we need again remove node_modules and rerun npm i This task is long and not automatic, or something escapes me?

Repro

Following my repro project which has fixed ng version to 9.0.0-rc.9

1. run git clone https://github.com/elvisbegovic/ngcc-has-changed.git && cd ngcc-has-changed && npm i && ng s
2. kill ng s with Ctrl+C
3. run ng update --next @angular/cli @angular/core --allow-dirty && ng s
4. error thrown

Describe the solution you’d like

Clean previous ngcc ivy entrypoints works in node_modules during ng update command, so they could be again compiled when rerun ng s after update finish.

[petebacondarwin]

PR here https://github.com/angular/angular/pull/35079

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