fix(datetime): emit ionChange for non-calendar picker presentation

[sean-perkins]

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?

When the presentation is not a calendar picker (time, month-year, month or year), selecting a value does not emit ionChange, unless the datetime was initialized with a default value.

This is due to this PR change: #25338

Issue URL: #25375

What is the new behavior?

The new value for the datetime will only be set if the check for a calendar picker with a new date selection is true or if the presentation of the datetime is of time, month, year or month-year.

Does this introduce a breaking change?

• Yes
• No

Other information

Dev-build: 6.1.8-dev.11654024993.1c2aa477 ✅

[averyjohnston]

Thanks for fixing this!