Add date input for timeline event dates (#20562)

frontend/src/metabase/components/form/FormWidget.jsx

...components/form/widgets/FormDateWidget/FormDateWidget.tsx

.../metabase/components/form/widgets/FormDateWidget/index.ts

.../metabase/components/form/widgets/FormDateWidget/types.ts

.../src/metabase/components/form/widgets/FormInputWidget.jsx

.../metabase/core/components/DateInput/DateInput.stories.tsx

...c/metabase/core/components/DateInput/DateInput.styled.tsx

...tend/src/metabase/core/components/DateInput/DateInput.tsx

...etabase/core/components/DateInput/DateInput.unit.spec.tsx

frontend/src/metabase/core/components/DateInput/index.ts

frontend/src/metabase/core/components/Input/Input.styled.tsx

frontend/src/metabase/core/components/Input/Input.tsx

frontend/src/metabase/core/components/Input/index.ts

frontend/src/metabase/entities/timeline-events/forms.js