Summarize step changes for metrics (#47200)

e2e/test/scenarios/metrics/metrics-editing.cy.spec.js

...rying/notebook/components/AggregateStep/AggregateStep.tsx

...uerying/notebook/components/BreakoutStep/BreakoutStep.tsx

...tabase/querying/notebook/components/DataStep/DataStep.tsx

...ing/notebook/components/ExpressionStep/ExpressionStep.tsx

...se/querying/notebook/components/FilterStep/FilterStep.tsx

...tabase/querying/notebook/components/JoinStep/JoinStep.tsx

...base/querying/notebook/components/LimitStep/LimitStep.tsx

...rying/notebook/components/Notebook/Notebook.unit.spec.tsx

.../notebook/components/NotebookStep/NotebookStep.styled.tsx

...uerying/notebook/components/NotebookStep/NotebookStep.tsx

...tebook/components/NotebookStep/NotebookStep.unit.spec.tsx

...ts/NotebookStep/NotebookStepHeader/NotebookStepHeader.tsx

...ebook/components/NotebookStep/NotebookStepHeader/index.ts

...tabase/querying/notebook/components/NotebookStep/index.ts

...tabase/querying/notebook/components/NotebookStep/utils.ts

...notebook/components/NotebookStepList/NotebookStepList.tsx

...tabase/querying/notebook/components/SortStep/SortStep.tsx

...rying/notebook/components/SummarizeStep/SummarizeStep.tsx

...SummarizeStep/SummarizeStepHeader/SummarizeStepHeader.tsx