Bug: initPinMapping

- There should be a `#else` block returning `false` along with an independent `return false` inside the `#elif FEATHER_ESP`
https://github.com/EmotiBit/EmotiBit_FeatherWing/blob/271682eff38b9a466d040abbea4c13a90e3b3e43/EmotiBitVersionController.cpp#L126-L128