CSV importing and exporting fixes (#8824)

Fixes issue https://github.com/twentyhq/twenty/issues/5793 (and
duplicate https://github.com/twentyhq/twenty/issues/8822)

- Fix importing multi-select and array fields.
- Fix exporting and importing RAW_JSON fields.

---------

Co-authored-by: ad-elias <elias@autodiligence.com>

packages/twenty-front/src/modules/object-record/object-options-dropdown/hooks/useExportProcessRecordsForCSV.ts

@@ -11,28 +11,36 @@ export const useExportProcessRecordsForCSV = (objectNameSingular: string) => {
   });
 
   const processRecordsForCSVExport = (records: ObjectRecord[]) => {
-    return records.map((record) => {
-      const currencyFields = objectMetadataItem.fields.filter(
-        (field) => field.type === FieldMetadataType.Currency,
-      );
+    return records.map((record) =>
+      objectMetadataItem.fields.reduce(
+        (processedRecord, field) => {
+          if (!isDefined(record[field.name])) {
+            return processedRecord;
+          }
 
-      const processedRecord = {
-        ...record,
-      };
-
-      for (const currencyField of currencyFields) {
-        if (isDefined(record[currencyField.name])) {
-          processedRecord[currencyField.name] = {
-            amountMicros: convertCurrencyMicrosToCurrencyAmount(
-              record[currencyField.name].amountMicros,
-            ),
-            currencyCode: record[currencyField.name].currencyCode,
-          } satisfies FieldCurrencyValue;
-        }
-      }
-
-      return processedRecord;
-    });
+          switch (field.type) {
+            case FieldMetadataType.Currency:
+              return {
+                ...processedRecord,
+                [field.name]: {
+                  amountMicros: convertCurrencyMicrosToCurrencyAmount(
+                    record[field.name].amountMicros,
+                  ),
+                  currencyCode: record[field.name].currencyCode,
+                } satisfies FieldCurrencyValue,
+              };
+            case FieldMetadataType.RawJson:
+              return {
+                ...processedRecord,
+                [field.name]: JSON.stringify(record[field.name]),
+              };
+            default:
+              return processedRecord;
+          }
+        },
+        { ...record },
+      ),
+    );
   };
 
   return { processRecordsForCSVExport };