[Feature] Support inheriting snapshot properties during Paimon compaction

### Search before asking

- [x] I searched in the [issues](https://github.com/apache/paimon/issues) and found nothing similar.

### Motivation

This is related to #5649, user may have stored some properties in snapshot properties, but these snapshot properties may loss once snapshot compaction happens, this feature aims to support inheriting snapshot properties during Paimon snapshot compaction.

### Solution

_No response_

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Read the related issue #5649 first, then trace the snapshot compaction entry point and how snapshot properties are handled. The feature is complete when properties stored on snapshots are preserved or inherited across snapshot compaction, with the expected behavior clarified and verified.

Written by the indexing model from the issue text.