Issue number: resolves#27112
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## What is the current behavior?
The select does not expose the label or the container for the
value/placeholder as a CSS shadow part in order to style it.
## What is the new behavior?
- Exposed `label` and `container` parts for custom styling
- Added an e2e test to verify the parts are working
- Renamed the existing screenshots for the custom tests to fix a typo
from "custon" to "custom"
## Does this introduce a breaking change?
- [ ] Yes
- [x] No
<!-- If this introduces a breaking change, please describe the impact
and migration path for existing applications below. -->
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Co-authored-by: ionitron <hi@ionicframework.com>
Issue number: resolves#27478
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issue. -->
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etc). Submit multiple pull requests if needed. -->
## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->
The modern syntax render function was missing `renderHiddenInput` which
caused modern `ion-select` instances to not participate in form
submission. Legacy syntax is not affected.
## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->
- Modern syntax calls `renderHiddenInput`.
## Does this introduce a breaking change?
- [ ] Yes
- [x] No
<!-- If this introduces a breaking change, please describe the impact
and migration path for existing applications below. -->
## Other information
<!-- Any other information that is important to this PR such as
screenshots of how the component looks before and after the change. -->
Dev build: `7.0.7-dev.11684158250.1920157d`
The Ionic Framework team would like to re-evaluate our approach to improving customization options when building mobile applications. We are looking at other solutions that a) make customizing an app UI easier and b) are applicable to a broader set of developers.
BREAKING CHANGE:
`ionChange` is no longer emitted when the `value` of `ion-select` is modified externally. `ionChange` is only emitted from user committed changes, such as confirming a selected option in the select's overlay.
resolves#22976
BREAKING CHANGE: Updated the `placeholder` property on `ion-input`, `ion-textarea`, and `ion-select` to have a type of `string | undefined`.
- Hides select text from screen readers so it isn't announced twice (Android talkback needs this)
- Adds the placeholder text to be announced if there is no value
- Don't add a comma if there is no value/placeholder (NVDA speech viewer)
- Don't announce alert label twice
