Tests are duplicated after hitting "u" in watch mode to update snapshots

Describe the bug

In longer running tests with snapshots, I'm finding that watch mode duplicates the tests when snapshots are being updated. The tests themselves are not run more than once, but the view of the tests is itself duplicated. This happens regardless of the tests being concurrent or not.

Reproduction

Here's a github repo: https://github.com/jakebailey/vitest-watch-mode-bug

I've performed the steps listed in the readme in the below screencast:

System Info

System:
    OS: Linux 5.15 Ubuntu 22.04.3 LTS 22.04.3 LTS (Jammy Jellyfish)
    CPU: (20) x64 Intel(R) Core(TM) i9-10900K CPU @ 3.70GHz
    Memory: 42.11 GB / 47.05 GB
    Container: Yes
    Shell: 5.8.1 - /usr/bin/zsh
  Binaries:
    Node: 20.11.0 - /run/user/1000/fnm_multishells/2583630_1705436394438/bin/node
    Yarn: 1.22.21 - /run/user/1000/fnm_multishells/2583630_1705436394438/bin/yarn
    npm: 10.3.0 - /run/user/1000/fnm_multishells/2583630_1705436394438/bin/npm
    pnpm: 8.14.1 - /run/user/1000/fnm_multishells/2583630_1705436394438/bin/pnpm
    bun: 1.0.22 - ~/.local/bin/bun
  npmPackages:
    vitest: ^1.2.0 => 1.2.0

Used Package Manager

pnpm

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

Start with the linked jakebailey/vitest-watch-mode-bug reproduction and follow its README to reproduce the snapshot update flow in watch mode. Press "u" during a longer-running snapshot test and verify that the test view is displayed only once afterward, for both concurrent and non-concurrent tests.