Fix duckduckgo integration test

[krichprollsch]

The duckduckgo integration test fails on main

$ node integration/duckduckgo.js
file:///home/pierre/wrk/demo/node_modules/puppeteer-core/lib/esm/puppeteer/util/assert.js:15
        throw new Error(message);
              ^

Error: No element found for selector: #searchbox_input
    at assert (file:///home/pierre/wrk/demo/node_modules/puppeteer-core/lib/esm/puppeteer/util/assert.js:15:15)
    at CdpFrame.type (file:///home/pierre/wrk/demo/node_modules/puppeteer-core/lib/esm/puppeteer/api/Frame.js:862:17)
    at async file:///home/pierre/wrk/demo/integration/duckduckgo.js:32:1

Node.js v22.14.0

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It hangs forever on nonblocking_libcurl branch