fix: Map relative area group and calibration points in Chromeleon parser (#1210)

## Summary

- Maps `relative area group` from peak data into peak custom information
document
- Maps `number of calibration points` from peak data into peak custom
information document

## Context

Follow-up to #1207. These two peak-level fields were identified as
unmapped gaps between the old Chromeleon adapter output and the new
allotropy parser output.

The gap report also flagged `bandwidth setting` and `relative retention
time` but those are already correctly mapped (bandwidth as `detector
bandwidth setting`, relative retention time as a standard peak field).

## Test plan

- [x] Verified `relative area group` appears in output (e.g. 6.65 in
Glycans peaks)
- [x] Verified `number of calibration points` appears in output (0.0 in
BioChem/S15 peaks)
- [x] All Chromeleon parser tests pass
- [x] Regenerated `new_updated/` output files for downstream CSV parser
comparison

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: nathan-stender

src/allotropy/parsers/benchling_chromeleon/benchling_chromeleon_structure.py

@@ -208,6 +208,10 @@ def _create_peak(peak: dict[str, Any], signal: dict[str, Any]) -> Peak:
                 "chromatographic peak resolution (USP)"
             ),
             "asymmetry aia": peak.get("asymmetry aia"),
+            "relative area group": try_float_or_none(peak.get("relative area group")),
+            "number of calibration points": try_float_or_none(
+                peak.get("number of calibration points")
+            ),
         },
     )