fix(workflows): keep snapshot metadata first

Author: TheodoreSpeaks

apps/sim/executor/execution/snapshot.test.ts

@@ -25,6 +25,8 @@ describe('ExecutionSnapshot', () => {
       ['agent.content', 123, 'function.result']
     )
 
+    expect(snapshot.toJSON()).toMatch(/^\{"metadata":/)
+    expect(JSON.parse(snapshot.toJSON())).toMatchObject({ version: 1 })
     expect(snapshot.workflowVariables).toEqual({ 'var-1': variable })
     expect(snapshot.selectedOutputs).toEqual(['agent.content', 'function.result'])
   })

apps/sim/executor/execution/snapshot.ts

@@ -64,11 +64,11 @@ export class ExecutionSnapshot {
 
   toJSON(): string {
     return JSON.stringify({
-      version: EXECUTION_SNAPSHOT_VERSION,
       metadata: {
         ...this.metadata,
         principal: serializePrincipal(this.metadata.principal),
       },
+      version: EXECUTION_SNAPSHOT_VERSION,
       workflow: this.workflow,
       input: this.input,
       workflowVariables: this.workflowVariables,