By report their economy is facing imminent collapse as a real estate bubble pops. I don't know whether this makes invasion of Taiwan soon more or less likely.
"experts" have been seeing this imminent collapse for 20 years now. It will eventually be true, but that's true for a lot of things if you keep claiming them for long enough.
Sure, slowing of China economy will make invasion to Taiwan more likely, for same reasons for which Hitler and Putin invades neighbors - all empires need to constantly show their people wins, or they will collapse.