Does the government of Taiwan subscribe to the One China Policy? My understanding is that it does not. I would hope that they are the ones with the agency here.
The CCP sees the Taiwanese as rebel separatists, so renaming "Republic of China" to "Republic of Taiwan" would increase, not decrease, the odds of invasion by confirming their propaganda. The CCP wants the island of Taiwan itself; it doesn't care about the ROC's claims on the mainland.