[SPARK-28481][SQL] More expressions should extend NullIntolerant
### What changes were proposed in this pull request?
1. Make more expressions extend `NullIntolerant`.
2. Add a checker(in `ExpressionInfoSuite`) to identify whether the expression is `NullIntolerant`.
### Why are the changes needed?
Avoid skew join if the join column has many null values and can improve query performance. For examples:
```sql
CREATE TABLE t1(c1 string, c2 string) USING parquet;
CREATE TABLE t2(c1 string, c2 string) USING parquet;
EXPLAIN SELECT t1.* FROM t1 JOIN t2 ON upper(t1.c1) = upper(t2.c1);
```
Before and after this PR:
```sql
== Physical Plan ==
*(2) Project [c1#5, c2#6]
+- *(2) BroadcastHashJoin [upper(c1#5)], [upper(c1#7)], Inner, BuildLeft
:- BroadcastExchange HashedRelationBroadcastMode(List(upper(input[0, string, true]))), [id=#41]
: +- *(1) ColumnarToRow
: +- FileScan parquet default.t1[c1#5,c2#6]
+- *(2) ColumnarToRow
+- FileScan parquet default.t2[c1#7]
== Physical Plan ==
*(2) Project [c1#5, c2#6]
+- *(2) BroadcastHashJoin [upper(c1#5)], [upper(c1#7)], Inner, BuildRight
:- *(2) Project [c1#5, c2#6]
: +- *(2) Filter isnotnull(c1#5)
: +- *(2) ColumnarToRow
: +- FileScan parquet default.t1[c1#5,c2#6]
+- BroadcastExchange HashedRelationBroadcastMode(List(upper(input[0, string, true]))), [id=#59]
+- *(1) Project [c1#7]
+- *(1) Filter isnotnull(c1#7)
+- *(1) ColumnarToRow
+- FileScan parquet default.t2[c1#7]
```
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Unit test.
Closes #28626 from wangyum/SPARK-28481.
Authored-by: Yuming Wang <yumwang@ebay.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
91148f428b