Fix dropdown styles in Amsterdam (#4301)

* Reusing EuiPopover panel classes inside EuiComboBox
* EuiSuperSelect now using EuiInputPopover
* Remove popover animation if attached
* Fix body line height in reset
* Fix date picker dropdown styles
* Removed breakpoint hiding time picker

CHANGELOG.md

@@ -4,10 +4,13 @@
 
 - Fixed stale state argument passed to `searchProps.onChange` in an `EuiSelectable`([#4292](https://github.com/elastic/eui/pull/4292))
 - Fixed initial focus of an `EuiButtonGroup` when first item in a popover ([#4288](https://github.com/elastic/eui/pull/4288))
+- Fixed visible scrollbar in `EuiComboBox` list ([#4301](https://github.com/elastic/eui/pull/4301))
+- Removed hiding of time select on small screens for `EuiDatePicker` ([#4301](https://github.com/elastic/eui/pull/4301))
 
 **Theme: Amsterdam**
 
 - Fixed styles for `EuiMarkdownEditor` ([#4289](https://github.com/elastic/eui/pull/4289))
+- Rounded all corners of dropdown type of inputs ([#4301](https://github.com/elastic/eui/pull/4301))
 
 ## [`30.4.1`](https://github.com/elastic/eui/tree/v30.4.1)
 

src-docs/src/views/color_picker/color_palette_display.js

@@ -192,6 +192,8 @@ export default () => {
                 checked={selectionType}
                 onChange={() => setSelectionType(!selectionType)}
                 compressed
+                showLabel={false}
+                label="Display as fixed"
               />
             </EuiFormRow>
           </EuiPopover>