Preserve repeated-start SCCB reads with fallback

[RubenKelevra]

Description

• Reverting commit fafc200 from fix: fix addr8v8 read err in sccb_ng #828 which caused the regression.
• Preserve repeated-start SCCB reads with fallback

Related

Fixes #846

Testing

Tested on ESP32-S3.

Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• All CI checks (GH Actions) pass.
• Documentation is updated as needed.
• Tests are updated or added as necessary.
• Code is well-commented, especially in complex areas.
• Git history is clean — commits are squashed to the minimum necessary.