fix(nav): exclude nav from custom dialog

[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)
  • Some docs updates need to be made in the ionic-docs repo, in a separate PR. See the contributing guide for details.
• 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 URL: resolves #25688, resolves #25677

The issue was caused by this commit: a6f3ae6

We targeted ion-modal .ion-page but did not consider that .ion-page is also used inside of ion-nav. As a result, this changed the styles for pages in ion-nav and broke page transitions.

We also considered just doing ion-modal > .ion-page, but there is an existing issue where multiple .ion-page elements can be appended on subsequent modal presentations. The fix for that will take some time, so we opted to exclude ion-nav from the .ion-page changes for now.

What is the new behavior?

• pages in ion-nav are now excluded from the custom dialog changes.

Does this introduce a breaking change?

• Yes
• No

Other information

[sean-perkins]

Looks great on my end.