Which @angular/* package(s) are the source of the bug?

core

Is this a regression?

No

Description

I have a legacy app which doesn't have strictTemplates enabled.

I updated to ng 17 and then built the project without error.

I then ran the preview migration script to convert the project to the new flow control.

I'm now getting errors consistent with strictTemplates. (These aren't issues with the migration going wrong.)

e.g.
error TS2339: Property 'YYYYYYY' does not exist on type 'XXXXXX'.

Can I force strictTemplates off again? (my tsconfig is unchanged between the 2 builds).

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

No response

Please provide the environment you discovered this bug in (run ng version)

Angular CLI: 17.0.1
Node: 18.17.1
Package Manager: npm 9.8.1
OS: win32 x64

Angular: 17.0.3
... animations, common, compiler, compiler-cli, core, forms
... language-service, localize, platform-browser
... platform-browser-dynamic, platform-server, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1700.1
@angular-devkit/build-angular   17.0.1
@angular-devkit/core            17.0.1
@angular-devkit/schematics      17.0.1
@angular/cli                    17.0.1
@angular/ssr                    17.0.1
@angular/youtube-player         17.0.0
@schematics/angular             17.0.1
rxjs                            7.8.1
typescript                      5.2.2
zone.js                         0.14.2

Anything else?

No response