fix: error in case of invalid interval expression (#5987)

This PR addresses an error that occurs when interval expressions contains invalid amount of components.
The error type was previously unclear and confusing: `NotYetImplemented`. That doesn't seem correct, because such values are not going to be supported.

Let's take a look at such example:

```sql
INTERVAL '1 MONTH DAY'
```
This is an obvious typo/mistake which leads to such error, but in fact it's just invalid value (missing number before `DAY`)

arrow-cast/src/cast/mod.rs

@@ -4403,17 +4403,17 @@ mod tests {
         test_unsafe_string_to_interval_err!(
             vec![Some("foobar")],
             IntervalUnit::YearMonth,
-            r#"Not yet implemented: Unsupported Interval Expression with value "foobar""#
+            r#"Parser error: Invalid input syntax for type interval: "foobar""#
         );
         test_unsafe_string_to_interval_err!(
             vec![Some("foobar")],
             IntervalUnit::DayTime,
-            r#"Not yet implemented: Unsupported Interval Expression with value "foobar""#
+            r#"Parser error: Invalid input syntax for type interval: "foobar""#
         );
         test_unsafe_string_to_interval_err!(
             vec![Some("foobar")],
             IntervalUnit::MonthDayNano,
-            r#"Not yet implemented: Unsupported Interval Expression with value "foobar""#
+            r#"Parser error: Invalid input syntax for type interval: "foobar""#
         );
         test_unsafe_string_to_interval_err!(
             vec![Some("2 months 31 days 1 second")],

arrow-cast/src/parse.rs

@@ -1381,8 +1381,8 @@ fn parse_interval_components(
 
     // invalid amounts?
     if !invalid_amounts.is_empty() {
-        return Err(ArrowError::NotYetImplemented(format!(
-            "Unsupported Interval Expression with value {value:?}"
+        return Err(ArrowError::ParseError(format!(
+            "Invalid input syntax for type interval: {value:?}"
         )));
     }