[CORE] Make `SubstraitContext` immutable

`SubstraitContext` is passed across different operators for generating Substrait plan. It's mutable by some APIs ([example](https://github.com/apache/incubator-gluten/blob/e436fa4899eee052a5ed019542d8ce5a4183ffd5/gluten-substrait/src/main/scala/org/apache/gluten/substrait/SubstraitContext.scala#L109-L113)), making it's behavior unpredictable in localized code.

We can do some refactors to make it immutable to ease maintenance and to simplify code. If needed, builder / factory patterns can be added.

Start with gluten-substrait/src/main/scala/org/apache/gluten/substrait/SubstraitContext.scala, especially the mutable APIs around lines 109–113 mentioned in the issue. Trace how SubstraitContext is passed across operators and determine the refactoring scope; done means its behavior is immutable, with builder or factory patterns added if needed.

Written by the indexing model from the issue text.