gcc: consider link when detecting compilers (#45169)

var/spack/repos/builtin/packages/gcc/package.py

@@ -561,9 +561,6 @@ def filter_detected_exes(cls, prefix, exes_in_prefix):
             ]
             if any(x in basename for x in substring_to_be_filtered):
                 continue
-            # Filter out links in favor of real executables
-            if os.path.islink(exe):
-                continue
 
             result.append(exe)