Binding to color input sets value of #000000 after mount

[cezaryszymanski]

Describe the bug

Hello

I found this bug when updating svelte from 5.2.7 to 5.19.8. When the value is binded to input with type color and the initial $state value is nullish then the value is changed to #000000 on mount. Before the update the value didn't change and stayed null

Reproduction

https://stackblitz.com/edit/vitejs-vite-c8kjjzku?file=src%2FApp.svelte

Logs

System Info

System:
    OS: Linux 6.8 Ubuntu 22.04.5 LTS 22.04.5 LTS (Jammy Jellyfish)
    CPU: (12) x64 13th Gen Intel(R) Core(TM) i7-1355U
    Memory: 19.40 GB / 31.04 GB
    Container: Yes
    Shell: 5.8.1 - /bin/zsh
  Binaries:
    Node: 20.14.0 - ~/.nvm/versions/node/v20.14.0/bin/node
    npm: 10.7.0 - ~/.nvm/versions/node/v20.14.0/bin/npm
    pnpm: 10.2.0 - ~/.nvm/versions/node/v20.14.0/bin/pnpm
    bun: 1.1.3 - ~/.bun/bin/bun
  Browsers:
    Chrome: 133.0.6943.53
  npmPackages:
    svelte: ^5.19.8 => 5.19.8

Severity

blocking an upgrade