fix(cabal-install): Fix cabal install <exe> installing every executable in the package

[zlonast]

fix: #8614 and fix: #10943

  $ cabal install example1 --installdir /tmp/executables
  Symlinking 'example1' to '/tmp/executables/example1'
- Symlinking 'example2' to '/tmp/executables/example2'

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