Merge pull request #6001 from metabase/xray-loading-followup

frontend/src/metabase/components/LoadingAndErrorWrapper.jsx

frontend/src/metabase/routes.jsx

frontend/src/metabase/xray/components/Periodicity.jsx

frontend/src/metabase/xray/components/StatGroup.jsx

frontend/src/metabase/xray/containers/CardComparison.jsx

frontend/src/metabase/xray/containers/CardXRay.jsx

frontend/src/metabase/xray/containers/FieldComparison.jsx

frontend/src/metabase/xray/containers/FieldXray.jsx

frontend/src/metabase/xray/containers/SegmentComparison.jsx

...d/src/metabase/xray/containers/SegmentFieldComparison.jsx

...d/src/metabase/xray/containers/SegmentTableComparison.jsx

frontend/src/metabase/xray/containers/SegmentXRay.jsx

frontend/src/metabase/xray/containers/TableComparison.jsx

frontend/src/metabase/xray/containers/TableXRay.jsx

frontend/src/metabase/xray/selectors.js

frontend/src/metabase/xray/utils.js

frontend/src/metabase/xray/xray.js

frontend/test/components/LoadingAndErrorWrapper.unit.spec.js

...uery_builder/components/dataref/SegmentPane.integ.spec.js

frontend/test/xray/xray.integ.spec.js