You would need the soure code of bedrock. Witch is proprietary software so it would need to be decomp to get said code (NTM the amount of updates would make it impossible unless the code was leaked on the internet(It also takes forever, Sonic Mania took a few years to be decomped)). THEN you would have to patch all of that BS to run it on the Wii U (ARM or x86 to PowerPC). NTM Legacy (A version of bedrock) is already available on the Wii U witch runs great for the platform AND is well put together.
If Java (Lancher with the Java Wrapper) wont be ported due to the amount of BS needed to be ported over, Why would you think Bedrock (A Closed-Source more complex game) would work?