feat(timepicker): allow input to be of type time with its native placeholder support

### Feature Description

Automatically add `:` like normal `` does,
or let user use the `type="time"` with the input.

### Use Case

Actually, we can type anything into the input, so the user may not understand that he has to enter `:` after the second character.

The way the native time picker works seems more intuitive.

Locate the timepicker input implementation and its existing tests, then compare the current text-entry behavior with a native input of type="time". Determine whether the accepted change is automatic colon insertion, support for the native input type, or both; done means the chosen behavior is covered by tests and is intuitive for users.

Written by the indexing model from the issue text.