[Feature request] Add sensor label to node_hwmon_temp_celsius

When I add node_hwmon_temp_celsius to a dashboard, I found that it is very hard to map those metrics to the corresponding physical devices.

There are only chip names and sensor names, and sensor names always show as "temp%d".

It seems the label label in node_hwmon_sensor_label is more "human readable".

Is it possible to also add the label into node_hwmon_temp_celsius?

An expected example:

node_hwmon_temp_celsius{chip="pci0000:00_0000:00:18_3", label="tdie", sensor="temp1"}
node_hwmon_temp_celsius{chip="pci0000:00_0000:00:18_3", label="tctl", sensor="temp2"}
node_hwmon_temp_celsius{chip="pci0000:00_0000:00:18_3", label="tccd1", sensor="temp3"}
node_hwmon_temp_celsius{chip="pci0000:00_0000:00:18_3", label="tccd2", sensor="temp4"}

And maybe we can remove node_hwmon_sensor_label as a metric after adding the label to node_hwmon_temp_celsius.
Will the label of a sensor change over time?

Start by tracing where node_hwmon_temp_celsius and node_hwmon_sensor_label are emitted and how their labels are populated. Determine whether sensor labels can change and whether node_hwmon_sensor_label should remain for compatibility. Done means the requested label behavior and metric-removal decision are resolved, implemented, and covered by the relevant collector tests.