fix: report auto-batch on-hold totals in completion summary

[mdiapenabc]

Description

Add System determined Eligible/NE kids to Batch flow to notify users how many records were added and how many were excluded due to missing CRA mandatory fields (auto-placed On Hold). Auto-batch already skipped incomplete records and put them On Hold, but the completion message only reported application/cancellation counts added to the batch.

This change surfaces the on-hold total in the job result, UI snackbar, Job Monitoring summary, and a read-only dialog listing excluded records and their missing fields.

What changed

• Extended AutoBatchResult with onHold count and incomplete record list from BatchesService
• Added shared completion summary formatting for auto-batch job message and logs
• Updated Job Monitoring AUTO_BATCH summary to include on-hold count when present
• Trigger ICM sync-back when records are only auto-held (no batch adds)
• Updated frontend auto-batch completion snackbar to report added and on-hold totals
• Added auto-batch variant of IncompleteRecordsDialog (read-only summary; records already on hold)
• Refresh contacts list when records are placed on hold, even if none were added to batch

How to test

• Run Add System determined Eligible/NE kids to Batch with a mix of complete and incomplete records
• Confirm snackbar reports both added counts and placed on hold count (e.g. 4 application, 2 cancellation contacts added to batch; 3 placed on hold due to missing CRA mandatory fields)
• Confirm Records Placed On Hold dialog opens with contact IDs and missing fields
• Confirm excluded records show On Hold status with hold reason in audit trail
• Run auto-batch where all candidates are incomplete; confirm on-hold-only summary and contacts list refresh
• Check Job Monitoring AUTO_BATCH row summary includes on-hold count when applicable
• Confirm manual Add selected items to batch flow is unchanged (confirm dialog still offers OK/Cancel to put on hold)