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>

Author: MylesBorins

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"', {