Warn users before they lose new changes (#30632)

e2e/support/helpers/e2e-dashboard-helpers.js

frontend/src/metabase-types/api/dataset.ts

frontend/src/metabase-types/api/mocks/dataset.ts

frontend/src/metabase-types/api/mocks/group.ts

frontend/src/metabase-types/api/mocks/permissions.ts

frontend/src/metabase-types/api/permissions.ts

frontend/src/metabase-types/store/admin.ts

...s/containers/ActionCreator/ActionContext/ActionContext.ts

...itActionContextProvider/ImplicitActionContextProvider.tsx

...QueryActionContextProvider/QueryActionContextProvider.tsx

...tabase/actions/containers/ActionCreator/ActionCreator.tsx

...ntainers/ActionCreator/FormCreator/FormCreator.styled.tsx

...rs/ActionCreator/tests/ActionCreator-Common.unit.spec.tsx

...c/metabase/admin/databases/containers/DatabaseEditApp.tsx

...e/admin/databases/containers/DatabaseEditApp.unit.spec.js

frontend/src/metabase/admin/databases/database.js

...tabase/admin/datamodel/components/FormInput/FormInput.tsx

...base/admin/datamodel/components/MetricForm/MetricForm.tsx

.../datamodel/components/MetricForm/MetricForm.unit.spec.tsx

...tabase/admin/datamodel/components/PartialQueryBuilder.jsx