Issue number: resolves#27201
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issue. -->
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## What is the current behavior?
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Selects with a floating label, no value, and a placeholder should have
the label cover the placeholder when blurred. One focus, the label
should translate to the top of the select, and the placeholder should be
visible.
## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->
- Floating label now covers the select and hides the placeholder when
the select is blurred, matching the `ion-input` and `ion-textarea`
behaviors.
## Does this introduce a breaking change?
- [ ] Yes
- [x] No
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and migration path for existing applications below. -->
## Other information
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screenshots of how the component looks before and after the change. -->
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Co-authored-by: ionitron <hi@ionicframework.com>
921bfae9e6