MERGE INTO doesn't work when using non-deterministic expressions in Pyspark

### Apache Iceberg version

1.7.1

### Query engine

Spark

### Please describe the bug 🐞

When I try to use a MERGE INTO statement to write to an Iceberg table in a Glue Job that applies a non-deterministic expression (e.g:`uuid`) I always get `[INVALID_NON_DETERMINISTIC_EXPRESSIONS] The operator expects a deterministic expression`. Is this something that is addressed in newer Iceberg versions?

### Willingness to contribute

- [ ] I can contribute a fix for this bug independently
- [ ] I would be willing to contribute a fix for this bug with guidance from the Iceberg community
- [x] I cannot contribute a fix for this bug at this time

No files, tests, or entry points are named. Start by reproducing the MERGE INTO case with a non-deterministic expression such as uuid in Spark on Iceberg 1.7.1, then compare behavior with newer Iceberg versions; done means the supported behavior is fixed and covered by a regression test, or the limitation is clearly established.

Written by the indexing model from the issue text.