fix(web): Make date-time formatting follow locale (#17899)

* fixed missing $locale parameter to .toLocaleString

* Remove unused types and functions in timeline-util

* remove unused export

* re-enable export because it is needed for tests

* format

web/src/lib/utils/byte-units.ts

@@ -34,6 +34,7 @@ export function getBytesWithUnit(bytes: number, maxPrecision = 1): [number, Byte
  * * de: `1,5 KiB`
  *
  * @param bytes number of bytes
+ * @param locale locale to use, default is `navigator.language`
  * @param maxPrecision maximum number of decimal places, default is `1`
  * @returns localized bytes with unit as string
  */