The world buys iPhones even after there are videos shown of the slaves producing them having "suicide nets" mounted outside the factory windows to keep the slaves from "escaping" through death. Why would solar panels be any different?
The entire "Uyghur genocide" story has fallen apart due to lack of evidence in the last few years. Turns out - no surprise - that it is in the US' interest that that area of China breaking off into an autonomous region / new state would forward US geopolitical interests and thwart China's Belt and Road initiative.
The US uses slave labor in the form of US prisoners both for services and renting the slaves out to large US corporations for manufacturing. Meaning any stance against Chinese forced labor is highly hypocritical. Both are horrible. The US claiming the high ground here is again just a geopolitical power play.
I do hope that the UN can at least put a dent in the Chinese dominance of the solar industry. That would be good for the world.
It does bear repeating that the reason China dominates the solar industry is because US multinationals moved solar production (like so many other US good paying manufacturing jobs) to low-cost China a couple of decades ago.