[MC-266682] Biome sources using inline biomes is not prevented by data pack validation

The bug

When using a biome source that has a biome in inline format, instead of using a reference, the world will fail to generate and lots of errors will show in the log.

How to reproduce

Download the attached data pack MC-266682.zip
Create a new world, add the data pack, and click done
Notice that the data pack validated
Confirm creating the world
Terrain is not generated and errors are spammed in the log

Expected behavior

The data pack would fail to validate, the codec should not allow inline biomes since a biome ID is required in lots of places.

Error messages

Failed to save chunk 6,-1
java.lang.NullPointerException

Error executing task on Client
java.lang.IllegalArgumentException: No value with id -1
	at hj.b(SourceFile:19)
	at dhu.a(SourceFile:83)
	at dhy.a(SourceFile:175)
	at dhr.a(SourceFile:159)
	at dhq.a(SourceFile:456)
	at fit.a(SourceFile:117)
	at fiy.a(SourceFile:732)
	at fiy.a(SourceFile:697)
	at yg.a(SourceFile:45)
	at yg.a(SourceFile:12)
	at vf.a(SourceFile:23)
	at bfo.d(SourceFile:156)
	at bfs.d(SourceFile:23)
	at bfo.x(SourceFile:130)
	at bfo.bp(SourceFile:115)
	at eqv.d(SourceFile:1231)
	at eqv.f(SourceFile:856)
	at net.minecraft.client.main.Main.main(SourceFile:253)