Two Hot Circuit Damage
I think you had a switch loop and put the lights in series because the switch leg was a hot white and black switched. I don’t think you hurt the lights, as any load that was turned on in series with this load caused a low voltage situation, and the driver was trying to fire but did not have enough voltage thus the flashing. This also possibly could be due to leakage but the same in either case your lights are fine.
Your lights did not have a return path but had voltage so they flashed or were connected in series, so the voltage was too low, but there was a return path via the other load.
Glad you figured it out but I think your lights are fine.