Revert "fix(api): remove intersection type usage"

This reverts commit 2437ae094d.

apps/api/src/app/portfolio/calculator/portfolio-calculator.ts

@@ -302,7 +302,9 @@ export abstract class PortfolioCalculator {
     const errors: ResponseError['errors'] = [];
     let hasAnySymbolMetricsErrors = false;
 
-    const positions: TimelinePosition[] = [];
+    const positions: (TimelinePosition & {
+      includeInHoldings: boolean;
+    })[] = [];
 
     const accumulatedValuesByDate: {
       [date: string]: {

libs/common/src/lib/models/timeline-position.ts

@@ -50,7 +50,6 @@ export class TimelinePosition {
   @Type(() => Big)
   grossPerformanceWithCurrencyEffect: Big;
 
-  includeInHoldings?: boolean;
   includeInTotalAssetValue?: boolean;
 
   @Transform(transformToBig, { toClassOnly: true })