Fix print.calibration docs and add v1's missing report schema

Confirmed live: both BambuMQTT versions reply to a calibration request
with a dedicated print.calibration report, not just push_status - the
v1 request schema's own description said the opposite ("printer responds
with push_status instead of calibration"), and v2's report schema framed
this as a v1-vs-v2 contrast that no longer holds. Both descriptions
corrected; the printer does still send ordinary push_status updates
alongside the dedicated report as calibration progresses, same as any
other print job, not instead of it.

Added v1/report/print/calibration.schema.json (only existed for v2
before) and wired it into v1/report.schema.json's print category
dispatcher, which never listed it since the file didn't exist.

schemas/bambulab/v2/report/print/calibration.schema.json

@@ -2,7 +2,7 @@
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "$id": "https://git.octoturge.com/Continuum/continuum-schemas/raw/branch/main/schemas/bambulab/v2/report/print/calibration.schema.json",
   "title": "CalibrationReport",
-  "description": "In contrast to Bambu MQTT v1, printer responds with `calibration` command, however it will still send `push_status` with following fields set: `{\"subtask_name\":\"auto_cali_for_user_param.gcode\",\"file\":\"/usr/etc/print/O1C2/auto_cali_for_user_param.gcode\",\"gcode_file\":\"/usr/etc/print/O1C2/auto_cali_for_user_param.gcode\",\"gcode_file_prepare_percent\":\"100\",\"gcode_state\":\"FAILED\",\"mc_print_stage\":\"1\"}`",
+  "description": "The direct reply to request/print/calibration.schema.json - both BambuMQTT versions respond this way (v1 has its own identical report/print/calibration.schema.json; earlier versions of this description incorrectly claimed v1 differed here). The printer still also sends ordinary `push_status` updates reflecting calibration progress alongside this report, e.g. `{\"subtask_name\":\"auto_cali_for_user_param.gcode\",\"file\":\"/usr/etc/print/O1C2/auto_cali_for_user_param.gcode\",\"gcode_file\":\"/usr/etc/print/O1C2/auto_cali_for_user_param.gcode\",\"gcode_file_prepare_percent\":\"100\",\"gcode_state\":\"FAILED\",\"mc_print_stage\":\"1\"}` - the same way any other print job in progress does, not a substitute for this report.",
   "allOf": [
     { "$ref": "../../../common/envelope.schema.json" },
     {