Fixing bugs in the Shareable Runtime (#49965) (#50243)

* Fixing bugs in the Shareable Runtime

* Updating snapshots

Author: Corey Robertson

x-pack/legacy/plugins/canvas/public/components/workpad_header/control_settings/custom_interval.tsx

@@ -54,7 +54,7 @@ export const CustomInterval = ({ gutterSize, buttonSize, onSubmit, defaultValue
         </EuiFlexItem>
 
         <EuiFlexItem grow={false}>
-          <EuiFormRow label="&nbsp;">
+          <EuiFormRow hasEmptyLabelSpace={true} compressed>
             <EuiButton
               disabled={isInvalid}
               size={buttonSize}