Flow and guster banner patterns do not render correctly after entered a world template created before 1.21.0

Flow and guster banner patterns do not render correctly after entered a world template created before 1.21.0 (or, more precisely, a baseGameVersion before 1.21.0).

Steps to Reproduce:

1. Apply the banner patterns mentioned above onto a banner.
2. Place the banner down.
3. Exit the world.
4. Enter a world template created before 1.21.0.
5. Exit the world.
6. Re-enter the world with banner.

Observed Results:
Flow and guster banner patterns do not render correctly re-entered the banner world.

Expected Results:
Flow and guster banner patterns would render correctly after re-entered the banner world.

This issue originally focus on the 1.21 experiment.