Set both npm_config_store_dir and pnpm_config_store_dir

pnpm <11 reads npm_config_*, pnpm 11+ reads pnpm_config_*.
Set both to cover all versions without version detection.

Author: colincasey

bin/compile

@@ -204,8 +204,9 @@ fi
 [ ! "$NPM_CONFIG_CACHE" ] && NPM_CONFIG_CACHE=$(mktemp -d -t npmcache.XXXXX)
 [ ! "$PNPM_CONFIG_CACHE" ] && PNPM_CONFIG_CACHE=$(mktemp -d -t pnpmcache.XXXXX)
 export YARN_CACHE_FOLDER NPM_CONFIG_CACHE PNPM_CONFIG_CACHE
-# npm_config_store_dir works across all pnpm versions (7.x – 11.x)
+# npm_config_store_dir works for pnpm <11, pnpm_config_store_dir for pnpm 11+
 export npm_config_store_dir="$PNPM_CONFIG_CACHE"
+export pnpm_config_store_dir="$PNPM_CONFIG_CACHE"
 
 install_bins() {
   local node_engine npm_engine yarn_engine node_version package_manager pnpm_engine