fix(http): stop unhandled rejections from the fetch cleanup path (#3566)

* fix(http): stop unhandled rejections from the fetch cleanup path

The request/body cleanup commands are fired as floating promises, and the
Rust side releases a resource only once: fetch_cancel_body is
resources_table.close(rid)?, and fetch_read_body also closes the rid at
end-of-body. So every release after the first rejects with BadResourceId
into a promise nobody is listening to.

Make dropBody idempotent and let both cleanup calls handle their own
rejection.

* chore: add changefile

* chore(http): rebuild api-iife.js

plugins/http/guest-js/index.ts

@@ -199,14 +199,14 @@ export async function fetch(
     }
   })
 
-  const abort = () => invoke('plugin:http|fetch_cancel', { rid })
+  const abort = () =>
+    invoke('plugin:http|fetch_cancel', { rid }).catch(() => {})
 
   // Optimistically check for abort signal
   // and avoid doing any work after doing intial work on the Rust side
   if (signal?.aborted) {
-    // we don't care about the result of this proimse
-    // eslint-disable-next-line @typescript-eslint/no-floating-promises
-    abort()
+    // we don't care about the result of this promise
+    void abort()
     throw new Error(ERROR_REQUEST_CANCELLED)
   }
 
@@ -230,8 +230,13 @@ export async function fetch(
     rid
   })
 
+  let bodyDropped = false
   const dropBody = () => {
-    return invoke('plugin:http|fetch_cancel_body', { rid: responseRid })
+    if (bodyDropped) return Promise.resolve()
+    bodyDropped = true
+    return invoke('plugin:http|fetch_cancel_body', { rid: responseRid }).catch(
+      () => {}
+    )
   }
 
   const readChunk = async (