`@attach` should accept falsely value

[RyanYANG52]

Describe the bug

svelte/packages/svelte/src/internal/client/dom/elements/attachments.js

Lines 11 to 13 in a5a0b49

	// we use `&&` rather than `?.` so that things like
	// `{@attach DEV && something_dev_only()}` work
	return fn && fn(node);

as code show, something like this should pass ts check <div {@attach enabled && test}></div>

Reproduction

Logs

System Info

System:
    OS: Windows 11 10.0.26100
    CPU: (20) x64 12th Gen Intel(R) Core(TM) i7-12700KF
    Memory: 16.33 GB / 31.82 GB
  Binaries:
    Node: 22.12.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.19 - ~\AppData\Roaming\npm\yarn.CMD
    npm: 10.9.0 - C:\Program Files\nodejs\npm.CMD
    pnpm: 9.15.1 - ~\AppData\Local\pnpm\pnpm.CMD
    bun: 1.1.40 - ~\.bun\bin\bun.EXE
  Browsers:
    Edge: Chromium (131.0.2903.99)
    Internet Explorer: 11.0.26100.1882
  npmPackages:
    svelte: ^5.30.1 => 5.30.1

Severity

annoyance