Revert "build: switch realpath to pwd"

This reverts commit dea40f8.

PR-URL: #31782
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>

node.gypi

@@ -312,15 +312,15 @@
       'llvm_version=="0.0"', {
       'ldflags': [
         '-Wl,-T',
-        '<!(echo "$(pwd)/src/large_pages/ld.implicit.script")',
+        '<!(realpath src/large_pages/ld.implicit.script)',
       ]
     }],
     [ 'OS=="linux" and '
       'target_arch=="x64" and '
       'llvm_version!="0.0"', {
       'ldflags': [
         '-Wl,-T',
-        '<!(echo "$(pwd)/src/large_pages/ld.implicit.script.lld")',
+        '<!(realpath src/large_pages/ld.implicit.script.lld)',
       ]
     }],
     [ 'node_use_openssl=="true"', {