[Utilities] Consolidate se23 logic and styles

[sophschneider]

See for this issue context, we need to keep the classNamePolarisSummerEditions2023, remove classNamePolarisSummerEditions2023ShadowBevelOptOut

### Tasks
- [x] `polaris-react/src/utilities/features/context.ts`

[laurkim]

Blocked by #10189.