`state_invalid_placement` when using async & remote functions branches

[ottomated]

Describe the bug

The following error prevents all usage of the async / remote function branches of svelte

[plugin:vite-plugin-svelte-module] node_modules/@sveltejs/kit/src/runtime/client/remote.svelte.js:124:18 `$state.raw(...)` can only be used as a variable declaration initializer or a class field
https://svelte.dev/e/state_invalid_placement
node_modules/@sveltejs/kit/src/runtime/client/remote.svelte.js:124:18
122 |      };
 123 |  
 124 |      this.#promise = $state.raw(this.#fn());
                                                  ^
 125 |    }
 126 |

Reproduction

REPL

System Info

System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 20.19.1 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.8.2 - /usr/local/bin/npm
    pnpm: 8.15.6 - /usr/local/bin/pnpm
  npmPackages:
    @sveltejs/kit: https://pkg.pr.new/sveltejs/kit/@sveltejs/kit@3b2a636 => 2.22.2 
    svelte: https://pkg.pr.new/svelte@async => 5.28.2

Severity

blocking all usage of svelte

[paoloricciuti]

Unfortunately once you open a pr pkg.pr.new stops updating the branch package so you can't actually use https://pkg.pr.new/svelte@async but you need to use https://pkg.pr.new/svelte@15844 (also in your repro you are using getTest but exporting getCart 😄 )