Same test as LLO ALOG 63983

After 15min from setting H1:AWC-OM2_TSAMS_POWER_SET to 1, the OM2 temperature increased from 22.7 degC to 26.2 degC.
This clearly reduced H1:CAL-CS_TDEP_KAPPA_C_OUTPUT from 1.086 to 1.076, which corresponds to the matching reduction to the OMC by ~2%.
Put the set value back to 0. The optical gain is slowly coming back as OM2 cools down.