[BUG] The XL reports chamber temperature despite not having one

[smurfix]

Printer type - XL

Printer firmware version - 5.12.

Original or Custom firmware - Original

Optional upgrades - no

USB drive or USB/Octoprint
Octoprint

Describe the bug
The periodic temperature report from the printer contains a "C:-30/0" stanza. The printer doesn't have a chamber and no chamber sensor, thus reporting that temperature makes no sense and confuses Octoprint.

How to reproduce
Connect to OctoPrint, look at its log entries. It complains about the C: every couple of seconds. This makes the SD card unhappy.

Expected behavior
Don't send the chamber temperature if you don't have a chamber.

G-code

Send: M115
Recv: FIRMWARE_NAME:Prusa-Firmware-Buddy 5.1.2+13478 (Github) SOURCE_CODE_URL:https://github.com/prusa3d/Prusa-Firmware-Buddy PROTOCOL_VERSION:1.0 MACHINE_TYPE:Prusa-XL EXTRUDER_COUNT:6 UUID:cede2a2f-41a2-4748-9b12-c55c62f367ff
…
Recv: Cap:CHAMBER_TEMPERATURE:0

Send: M155 S2
Recv: ok
Recv:  T:6.00/0.00 B:20.39/0.00 C:-30.00/0.00 X5:6.00/36.00 A:33.56/0.00 T0:20.00/0.00 T1:19.00/0.00 T2:21.00/0.00 T3:21.00/0.00 T4:22.00/0.00 T5:6.00/0.00 @:0 B@:0 HBR@:0 @0:0 @1:0 @2:0 @3:0 @4:0 @5:0 B_0_0:20.30/0.00 B_1_0:20.40/0.00 B_2_0:20.30/0.00 B_3_0:20.20/0.00 B_0_1:20.30/0.00 B_1_1:20.40/0.00 B_2_1:20.50/0.00 B_3_1:20.30/0.00 B_0_2:20.30/0.00 B_1_2:20.50/0.00 B_2_2:20.50/0.00 B_3_2:20.20/0.00 B_0_3:20.50/0.00 B_1_3:20.60/0.00 B_2_3:20.60/0.00 B_3_3:20.30/0.00

[github-actions]

This issue has been flagged as stale because it has been open for 60 days with no activity. The issue will be closed in 7 days unless someone removes the "stale" label or adds a comment.

[github-actions]

This issue has been closed due to lack of recent activity. Please consider opening a new one if needed.

[smurfix]

Sigh 7 days are too short.

[github-actions]

Thank you for your contribution to our project. This issue has not received any updates for 60 days and may be considered "stale." If this issue is still important to you, please add an update within the next 7 days to keep it open. Administrators can manually reopen the issue if necessary.

[smurfix]

That auto-close is annoying.

[bkerler]

This should be fixed with PR #4347.