CupertinoSearchTextField placeholder should resize as the text field resizes instead of being closed over #154648
Description
Use case
If a CupertinoSearchTextField is made to resize (for example, in a scroll view), the placeholder text should move as the search bar resizes instead of being closed over.
Native Search Bar
native.search.bar.opacity.mov
Flutter CupertinoSearchTextField
flutter.search.bar.opacity.mov
CupertinoSearchTextField uses CupertinoTextField behind the scenes, so this will probably require changes in CupertinoTextField:
Flutter CupertinoTextField
flutter.cupertino.textfield.opacity.mov
Proposal
Match the native text field/search bar resizing behavior.