refactor: Consolidate redundant code in workflow execution-functions (no-changelog) (#4884)

* refactor: Consolidate redundant code in workflow interfaces (no-changelog)

* consolidate all execution-functions interfaces code

* move rawBody definition back

* address PR comments

packages/nodes-base/nodes/SendInBlue/GenericFunctions.ts

@@ -78,9 +78,9 @@ export namespace SendInBlueNode {
 						);
 					}
 
-					const bufferFromIncomingData = (await this.helpers.getBinaryDataBuffer(
+					const bufferFromIncomingData = await this.helpers.getBinaryDataBuffer(
 						binaryPropertyAttachmentName,
-					)) as Buffer;
+					);
 
 					const {
 						data: content,
@@ -93,8 +93,8 @@ export namespace SendInBlueNode {
 					const name = getFileName(
 						itemIndex,
 						mimeType,
-						fileExtension,
-						fileName || item.binary!.data.fileName,
+						fileExtension!,
+						fileName || item.binary!.data.fileName!,
 					);
 
 					attachment.push({ content, name });