[Fix] DisposeResources: continue chain on throw

[ikeyan]

Fixes #9.

Root cause

In aos/DisposeResources.js, the async path chained each resource's disposal via $then(prev, onFulfilled, rejecter). Two problems:

1. When one resource's dispose rejected, the next iteration only installed rejecter on the rejected promise, so the earlier-pushed resource's dispose never ran.
2. rejecter returned undefined, so the final promise resolved to undefined instead of the accumulated CompletionRecord. The caller's completion['?']() then threw the TypeError shown above.

Changes

• aos/DisposeResources.js: rewrite the async path so every resource's dispose runs regardless of earlier errors, and the promise resolves to the up-to-date completion at the end.
• aos/AddDisposableResource.js: fix a typo ('SYNC_DISPOSE' -> 'SYNC-DISPOSE') so use(null) / use(undefined) on a sync DisposableStack correctly returns UNUSED (step 1.a) instead of pushing a method-less sync resource. Lands in its own commit with a regression test.
• test/tests.js: regression tests for the issue (a throwing later-pushed defer runs the earlier-pushed defer, and a promise-rejecting defer surfaces the rejection) and for the SYNC-DISPOSE typo.

The existing behavior of rejecting mixed sync/async stacks is unchanged.

Test plan

• npm test (runs lint + 822 tape assertions, 812 pre-existing + 10 new) passes.
• Manual repro from the issue behaves as expected (1 is printed, then Error: 2 is thrown):

~/DisposableStack % cat test.mjs
import './auto.js';

async function main() {
    await using stack = new AsyncDisposableStack()    
    
    stack.defer(() => {
        console.log('1')
    })
    
    stack.defer(() => {
        throw new Error('2')
    })
}

void main()

~/DisposableStack % node test.mjs
1
file:///~/DisposableStack/test.mjs:11
        throw new Error('2')
              ^

Error: 2
    at file:///~/DisposableStack/test.mjs:11:15
    at AsyncDisposableStack.disposeAsync (<anonymous>)
    at main (file:///~/DisposableStack/test.mjs:10:11)
    at file:///~/DisposableStack/test.mjs:15:6
    at ModuleJob.run (node:internal/modules/esm/module_job:430:25)
    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:661:26)
    at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:101:5)

Node.js v24.14.1

[ljharb]

I'm not stoked about the LLM usage here. Either way, the fix (from _ to -) is a good one! Could you please put that, and a regression test, in its own commit, and then put any refactors you're interested in in their own commits?

[ikeyan]

The typo fix and minimal fix for #9 with their respective regression tests are in their own commits now.

[ljharb]

Thanks. The two fixes look great - the refactors, though, make the AOs deviate farther from the spec text. I try to keep my spec polyfills as close to 1:1 with the spec as possible.

[ikeyan]

Removed the refactors from this PR.