Reverted request body extraction simplification

Author: sdangol

packages/event-handler/src/http/middleware/validation.ts

@@ -36,9 +36,18 @@ export const createValidationMiddleware = <
       if (reqSchemas.body) {
         const clonedRequest = reqCtx.req.clone();
         const contentType = reqCtx.req.headers.get('content-type');
-        const bodyData = contentType?.includes('application/json')
-          ? await clonedRequest.json()
-          : await clonedRequest.text();
+        let bodyData: unknown;
+
+        if (contentType?.includes('application/json')) {
+          try {
+            bodyData = await clonedRequest.json();
+          } catch {
+            // If JSON parsing fails, get as text and let validator handle it
+            bodyData = await reqCtx.req.clone().text();
+          }
+        } else {
+          bodyData = await clonedRequest.text();
+        }
 
         const validatedBody = await validateRequest(
           reqSchemas.body,