[Rust] [DataFusion] Optimize joins with dynamic capacity for output batches

[asfimport]

Rather than using the size of the left or right batches to determine the capacity of the output batches we can use the average size of previous output batches.

Reporter: Andy Grove / @andygrove
Assignee: Andy Grove / @andygrove

PRs and other links:

• GitHub Pull Request #9036

_{Note: This issue was originally created as ARROW-11053. Please see the migration documentation for further details.}