Benchmark with `json` reporter and `outputFile` causes OOM crash about vitest HOT 2 CLOSED

It looks like generated json file is very huge due to all samples and JSON.stringify makes all double floating point to ascii strings, so it'll gets bigger in memory.

I'm not sure if samples are something users can consume, so maybe we need to make it opt-in to output this.

Not sure if it runs on stackblitz, but what I tested was something like this:
https://stackblitz.com/edit/vitest-dev-vitest-suaxsm?file=test%2Fbasic.bench.ts

$ ls -lh examples/basic/out.json 
-rw-r--r-- 1 hiroshi hiroshi 399M Mar  7 12:31 examples/basic/out.json

{
  "numTotalTestSuites": 1,
  "numTotalTests": 1,
  "testResults": {
    "": [
      {
        "name": "foo",
        "rank": 1,
        "rme": 0.5177719116201918,
        "samples": [
          0.00002999999992425728,
          0.00002999999992425728,
          ...

from vitest.

Let's close this in favour of #5297.

from vitest.