fix(@schematics/angular): issues in apps generated with '--file-name-style-guide=2016' flag

[pawelfras]

PR Checklist

Please check to confirm your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular-cli/blob/main/CONTRIBUTING.md#-commit-message-guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

Issue Number: #31830

What is the new behavior?

This PR introduces fixes for apps created with flag --file-name-style-guide=2016:

• fixes references to non-existing app.ts file, causing build and test issues
• changes file names from app-module.ts and app-routing-module.ts to app.module.ts and app-routing.module.ts, for consistency

Does this PR introduce a breaking change?

• Yes
• No

Other information

[alan-agius4]

Thanks

[pawelfras]

Hi @alan-agius4,
I just noticed that the main.ts imported a non-existent app-module.ts file. I added changes to the main.ts.template file to make it use the typeSeparator variable as well. Would you mind taking a look at this change?
Thank you!

[alan-agius4]

@pawelfras, sure thanks.

[dgp1130]

This PR was merged into the repository. The changes were merged into the following branches:

• main: 70e67fe
• 21.0.x: e8feba9