[SPARK-16343][SQL] Improve the PushDownPredicate rule to pushdown predicates...

[SPARK-16343][SQL] Improve the PushDownPredicate rule to pushdown predicates correctly in non-deterministic condition.

## What changes were proposed in this pull request?

Currently our Optimizer may reorder the predicates to run them more efficient, but in non-deterministic condition, change the order between deterministic parts and non-deterministic parts may change the number of input rows. For example:
```SELECT a FROM t WHERE rand() < 0.1 AND a = 1```
And
```SELECT a FROM t WHERE a = 1 AND rand() < 0.1```
may call rand() for different times and therefore the output rows differ.

This PR improved this condition by checking whether the predicate is placed before any non-deterministic predicates.

## How was this patch tested?

Expanded related testcases in FilterPushdownSuite.

Author: 蒋星博 <jiangxingbo@meituan.com>

Closes #14012 from jiangxb1987/ppd.