Select: Portal menu by default (#48176)

* Remove menuShouldPortal from all <Select /> components

* fix unit tests

* leave menuShouldPortal as an escape hatch

* Fix import order

plugins-bundled/internal/input-datasource/src/InputQueryEditor.tsx

@@ -68,7 +68,7 @@ export class InputQueryEditor extends PureComponent<Props, State> {
       <div>
         <InlineField label="Data" labelWidth={8}>
           <>
-            <Select menuShouldPortal width={20} options={options} value={selected} onChange={this.onSourceChange} />
+            <Select width={20} options={options} value={selected} onChange={this.onSourceChange} />
             {query.data ? (
               <div style={{ alignSelf: 'center' }}>{describeDataFrame(query.data)}</div>
             ) : (