conf.d: Change alias-binding from "strong" to "same"

In general, "same" binding is preferred more than "strong" for substitute purpose because that isn't strictly the substitution once the binding is forcibly changed.
11 jobs for 30-core-fonts-web in 13 minutes and 47 seconds (queued for 2 seconds)
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passed meson android arm64 fedora #12521905

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passed meson macos #12521903
gst-macos-10.15

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passed meson-mingw-w64-build #12521900

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manual meson msys2 #12521904
docker windows 1809 allowed to fail manual
passed meson-shared-build #12521898

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passed meson-static-build #12521899

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passed meson vs2017 amd64 #12521901
docker windows 1809

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passed meson vs2017 x86 #12521902
docker windows 1809

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passed mingw-build #12521897

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passed shared-build #12521895

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passed static-build #12521896

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