Fix JSDoc parameters for GET_AFFECTED_USERS_CHART_DATA action

[Copilot]

The JSDoc for GET_AFFECTED_USERS_CHART_DATA documented parameters (startDate, endDate, groupBy) that don't exist in the actual function signature.

Changes:

• Updated JSDoc to reflect actual parameters: projectId, eventId, originalEventId, days
• Removed incorrect parameters and unused context.dispatch reference
• Changed parameter object name from "project" to "payload" for clarity

Before:

/**
 * @param project.startDate - start date
 * @param project.endDate - end date
 * @param project.groupBy - grouping interval in minutes
 */
async [GET_AFFECTED_USERS_CHART_DATA](
  { commit },
  { projectId, eventId, originalEventId, days }

After:

/**
 * @param payload.projectId - project's id
 * @param payload.eventId - event's id
 * @param payload.originalEventId - original event's id
 * @param payload.days - number of days to fetch chart data for
 */
async [GET_AFFECTED_USERS_CHART_DATA](
  { commit },
  { projectId, eventId, originalEventId, days }

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[codex-assistant]

Thanks for adding a description — the PR is now marked as Ready for Review.