gh-103365: [Enum] STRICT boundary corrections (GH-103494)

STRICT boundary:

- fix bitwise operations
- make default for Flag
(cherry picked from commit 2194071540313e2bbdc7214d77453b9ce3034a5c)

Co-authored-by: Ethan Furman <ethan@stoneleaf.us>

Miss Islington (bot) committed 3y ago

804a973d8e5fd2728aeef268f3e577d2c0b05baa

Parent: e643412

Committed by GitHub <noreply@github.com> on 4/13/2023, 3:55:53 PM