chore: Enable "experimentalSortImports" in Oxfmt and reformat all imorts.

src/agents/bash-tools.exec.background-abort.test.ts

@@ -1,11 +1,10 @@
 import { afterEach, expect, test } from "vitest";
-
-import { createExecTool } from "./bash-tools.exec";
 import {
   getFinishedSession,
   getSession,
   resetProcessRegistryForTests,
 } from "./bash-process-registry";
+import { createExecTool } from "./bash-tools.exec";
 import { killProcessTree } from "./shell-utils";
 
 const sleep = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));