chore: manually fix clippy::cast_possible_truncation

crates/proof-of-sql-parser/src/intermediate_decimal.rs

@@ -56,13 +56,19 @@ impl IntermediateDecimal {
     /// Get the precision of the fixed-point representation of this intermediate decimal.
     #[must_use]
     pub fn precision(&self) -> u8 {
-        self.value.digits() as u8
+        match u8::try_from(self.value.digits()) {
+            Ok(v) => v,
+            Err(_) => u8::MAX, // Returning u8::MAX on truncation
+        }    
     }
 
     /// Get the scale of the fixed-point representation of this intermediate decimal.
     #[must_use]
     pub fn scale(&self) -> i8 {
-        self.value.fractional_digit_count() as i8
+        match i8::try_from(self.value.fractional_digit_count()) {
+            Ok(v) => v,
+            Err(_) => i8::MAX, // Returning i8::MAX on truncation
+        }    
     }
 
     /// Attempts to convert the decimal to `BigInt` while adjusting it to the specified precision and scale.