arrow

MINOR: [Go][ipc] Fix typeFromFB  (#33905)



### Rationale for this change

Fix typeFromFB for map type with non-nullable items

### Are these changes tested?

yes
### Are there any user-facing changes?

bug fix

Authored-by: coldWater <forsaken628@gamil.com>
Signed-off-by: Matt Topol <zotthewizard@gmail.com>