Enhanced form with `<button formaction>` scrolls to top of form on Chromium browsers

Describe the bug

I have an enhanced form using SvelteKit, and I use <button formaction="?/addPet"> to add form inputs to the form. Its wrapping form has a separate action:

<form id="pet-form" method="POST" action="?/submit" use:enhance data-sveltekit-noscroll>
  <!-- labels and inputs -->
  <div>
    <button style="--color-link: #444;" formaction="?/addPet">Add pet name</button>
    <button>Submit form!</button>
  </div>
</form>

On a Chromium browser, when clicking "Add pet name", the page scrolls to the top of the form. On Firefox and Safari, the scroll position stays put as expected.

Reproduction

Form example with issue: https://github.com/theetrain/sveltekit-formaction-issue-scroll

Logs

No response

System Info

System:
    OS: macOS 12.6.3
    CPU: (8) x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
    Memory: 3.48 GB / 16.00 GB
    Shell: 5.8.1 - /bin/zsh
  Binaries:
    Node: 18.12.1 - ~/.nvm/versions/node/v18.12.1/bin/node
    Yarn: 1.22.19 - ~/.nvm/versions/node/v18.12.1/bin/yarn
    npm: 8.19.2 - ~/.nvm/versions/node/v18.12.1/bin/npm
  Browsers:
    Brave Browser: 111.1.49.120
    Chrome: 111.0.5563.64
    Firefox: 111.0
    Safari: 16.3
  npmPackages:
    @sveltejs/adapter-auto: ^2.0.0 => 2.0.0 
    @sveltejs/kit: ^1.5.0 => 1.12.0 
    svelte: ^3.54.0 => 3.57.0 
    vite: ^4.0.0 => 4.2.0

Severity

annoyance

Additional Information

No response

Start with the linked reproduction and the form-enhancement handling for POST forms with a button-level formaction. Reproduce the scroll change in Chromium, then trace how the enhanced submission handles scroll restoration. Done means clicking "Add pet name" preserves the current scroll position in Chromium without changing the expected behavior in Firefox or Safari.