Migration to Control Flow Syntax Removes CommonModule While Still Needed #59846

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

core

Is this a regression?

Yes

Description

When running the ng generate @angular/core:control-flow schematic on a large project, the migration tool incorrectly removes CommonModule from the component's imports: [] array, even though directives or pipes like async, date, and ngTemplateOutlet are still in use. This leads to runtime errors where these directives and pipes are no longer recognized in the template, but not fails the build

Please provide a link to a minimal reproduction of the bug

#59846 (comment)

Please provide the exception or error you saw

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

Angular CLI: 18.2.11
Node: 20.17.0
Package Manager: npm 10.8.2
OS: darwin arm64

Angular: undefined
... 

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1802.11
@angular-devkit/build-angular   18.2.11
@angular-devkit/core            18.2.11
@angular-devkit/schematics      18.2.11
@angular/cli                    18.2.11
@angular/compiler               18.2.10
@angular/compiler-cli           18.2.10
@angular/language-service       18.2.10
@schematics/angular             18.2.11
typescript                      5.5.4

Anything else?

few notes:

• this bug only related to standalone components (our project is mixed)
• I suspect It might related to components were the template isn't changed (meaning already using the new control flow) - but has CommonModule in the imports array - maybe in this edge case, the migration removes the CommonModule without check if other directives are used