[SPARK-21354][SQL] INPUT FILE related functions do not support more than one sources

### What changes were proposed in this pull request?
The build-in functions `input_file_name`, `input_file_block_start`, `input_file_block_length` do not support more than one sources, like what Hive does. Currently, Spark does not block it and the outputs are ambiguous/non-deterministic. It could be from any side.

```
hive> select *, INPUT__FILE__NAME FROM t1, t2;
FAILED: SemanticException Column INPUT__FILE__NAME Found in more than One Tables/Subqueries
```

This PR blocks it and issues an error.

### How was this patch tested?
Added a test case

Author: gatorsmile <gatorsmile@gmail.com>

Closes #18580 from gatorsmile/inputFileName.