fix(angular): inline modals and popovers now add .ion-page class correctly

[liamdebeasi]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Build (npm run build) was run locally and any changes were pushed
• Lint (npm run lint) has passed locally and any fixes were made for failures

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Issue Number: resolves #24750

This fixes a regression caused by 596aad4. When using inline overlays with Angular, the inner content is not available at the time of overlay creation. As a result, a stray .ion-page div was being added that later covered the entire modal content, making it non-interactive.

What is the new behavior?

• Do not append .ion-page element if there are no children to append to.
• Ensure all inline modals+popovers have the .ion-page class added

Does this introduce a breaking change?

• Yes
• No

Other information

[sean-perkins]

Changes look good to me (assuming all tests pass).