cmd/link: Go 1.24.3 and 1.23.9 regression - duplicated definition of symbol dlopen [1.24 backport]

[gopherbot]

@cherrymui requested issue #73617 to be considered for backport to the next 1.24 minor release.

@gopherbot please open backport issues. This is a regression in the previous minor releases, and can cause build failures for some uses of linkname which used to work. Thanks.

[gopherbot]

Change https://go.dev/cl/676957 mentions this issue: [release-branch.go1.24] cmd/link: allow linkname reference to a TEXT symbol regardless of size

[gopherbot]

Closed by merging CL 676957 (commit a31c931) to release-branch.go1.24.