I doubt if they would even if it violated Taiwanese airspace (adiz is not airspace). They’d probably try to shoo it away but not publicly make a big deal.
It’s like back in the Cold War, the Swedish Navy tracked down a Soviet submarine in their waters. They announced it was an “unknown intruder”, played cat and mouse with it for a few days, then “lost” it- showing the Soviets what they could do, but saving the Russkis and themselves the embarrassment of a confrontation.
(Don Cherry, a loudmouth hockey announcer at that time, who missed the old Canadian style of slugging it out and despised all this fancy-schmancy European skating and passing that was being introduced into the NHL, said “the Russians probably just went into a corner- everybody knows a Swede will never go into a corner”.)