Fix empty input 415 unsupported media type

cli/flow.ts

@@ -115,7 +115,7 @@ async function run(
   const id = await JobService.runFlowByPath({
     workspace,
     path,
-    requestBody: opts.input,
+    requestBody: opts.input ?? {},
   });
 
   let i = 0;

cli/script.ts

@@ -183,7 +183,7 @@ async function run(
   let id = await JobService.runScriptByPath({
     workspace,
     path,
-    requestBody: opts.input,
+    requestBody: opts.input ?? {},
   });
 
   track_job(workspace, id);