fix: remove extra penalty factor validation

Author: MohamedAliBouhaouala

api/src/chat/services/block.service.ts

@@ -219,10 +219,6 @@ export class BlockService extends BaseService<
         const nluPenaltyFactor: number =
           await this.getDefaultNluPenaltyFactor();
 
-        if (nluPenaltyFactor < 0 || nluPenaltyFactor > 1) {
-          throw new Error('Penalty Factor must be between 0 and 1.');
-        }
-
         // Proceed with matching the best NLP block
         if (matchesWithPatterns.length > 0) {
           block = (await this.matchBestNLP(