`tests/rustdoc-gui/go-to-collapsed-elem.goml` might be flaky

[jieyouxu]

======== tests/rustdoc-gui/go-to-collapsed-elem.goml ========
[ERROR] line 40
    at `tests/rustdoc-gui/go-to-collapsed-elem.goml` line 21: Error: Node is detached from document: for command `click: "//*[@id='search']//a[@href='../test_docs/struct.Foo.html#method.must_use']"`
    at <file:///checkout/obj/build/x86_64-unknown-linux-gnu/test/rustdoc-gui/doc/test_docs/struct.Foo.html?search=t_use>
<= doc-ui tests done: 143 succeeded, 1 failed, 0 filtered out
Error: ()

#157744 (comment)

Note: I was testing windows-2025-vs2026 runners, but AFAIK this shouldn't be relevant to the VS version.