fix(frontend): remove root's implicit reliance on d3-format's hoisted types

setupFormatters.ts and bootstrapTypes.ts still imported FormatLocaleDefinition
directly from d3-format, so root type-checking depended on @types/d3-format
being hoisted from @superset-ui/core's devDependencies rather than an
explicit root dependency. Re-export the type from core (alongside the
existing formatSpecifier re-export) and import it from there instead,
removing the last direct root usages of d3-format.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

superset-frontend/packages/superset-ui-core/src/number-format/index.ts

@@ -20,6 +20,7 @@
 export { default as NumberFormats } from './NumberFormats';
 export { default as NumberFormatter, PREVIEW_VALUE } from './NumberFormatter';
 export { formatSpecifier } from 'd3-format';
+export type { FormatLocaleDefinition } from 'd3-format';
 export { DEFAULT_D3_FORMAT } from './D3FormatConfig';
 
 export {

superset-frontend/src/setup/setupFormatters.ts

@@ -32,8 +32,8 @@ import {
   setCurrencyLocale,
   createLengthFormatter,
   createThroughputFormatter,
+  FormatLocaleDefinition,
 } from '@superset-ui/core';
-import { FormatLocaleDefinition } from 'd3-format';
 import { TimeLocaleDefinition } from 'd3-time-format';
 
 export default function setupFormatters(

superset-frontend/src/types/bootstrapTypes.ts

@@ -16,7 +16,6 @@
  * specific language governing permissions and limitations
  * under the License.
  */
-import { FormatLocaleDefinition } from 'd3-format';
 import { TimeLocaleDefinition } from 'd3-time-format';
 import { isPlainObject } from 'lodash-es';
 import { Languages } from 'src/features/home/LanguagePicker';
@@ -28,6 +27,7 @@ import {
 import type {
   ColorSchemeConfig,
   FeatureFlagMap,
+  FormatLocaleDefinition,
   JsonObject,
   SequentialSchemeConfig,
 } from '@superset-ui/core';