Function millisecondsToIsoDuration

millisecondsToIsoDuration(milliseconds: number): string
Converts milliseconds to ISO 8601 duration format
Parameters
- milliseconds: number
  Duration in milliseconds
Returns string
ISO 8601 duration string
Example
```
millisecondsToIsoDuration(5400000); // Returns "PT1H30M"
millisecondsToIsoDuration(90000); // Returns "PT1M30S"
```
- Defined in utils.ts:50