fix(compass-web): update sandbox toast action to make sign in visible (#6588)

Author: Anemy

packages/compass-web/sandbox/sandbox-atlas-sign-in.tsx

@@ -42,8 +42,6 @@ const descriptionStyles = css({
 
 const actionLabelStyles = css({
   flex: 'none',
-  // To center-align against the title
-  marginTop: '-20px',
 });
 
 function ToastBodyWithAction({