fs: fix cp dir/non-dir mismatch error messages

The error messages for `ERR_FS_CP_DIR_TO_NON_DIR` and
`ERR_FS_CP_NON_DIR_TO_DIR` were the inverse of the copy direction
actually performed.

Refs: #44598 (comment)

Author: fahrradflucht

lib/internal/fs/cp/cp-sync.js

@@ -82,8 +82,8 @@ function checkPathsSync(src, dest, opts) {
     }
     if (srcStat.isDirectory() && !destStat.isDirectory()) {
       throw new ERR_FS_CP_DIR_TO_NON_DIR({
-        message: `cannot overwrite directory ${src} ` +
-          `with non-directory ${dest}`,
+        message: `cannot overwrite non-directory ${dest} ` +
+          `with directory ${src}`,
         path: dest,
         syscall: 'cp',
         errno: EISDIR,
@@ -92,8 +92,8 @@ function checkPathsSync(src, dest, opts) {
     }
     if (!srcStat.isDirectory() && destStat.isDirectory()) {
       throw new ERR_FS_CP_NON_DIR_TO_DIR({
-        message: `cannot overwrite non-directory ${src} ` +
-          `with directory ${dest}`,
+        message: `cannot overwrite directory ${dest} ` +
+          `with non-directory ${src}`,
         path: dest,
         syscall: 'cp',
         errno: ENOTDIR,

lib/internal/fs/cp/cp.js

@@ -86,8 +86,8 @@ async function checkPaths(src, dest, opts) {
     }
     if (srcStat.isDirectory() && !destStat.isDirectory()) {
       throw new ERR_FS_CP_DIR_TO_NON_DIR({
-        message: `cannot overwrite directory ${src} ` +
-            `with non-directory ${dest}`,
+        message: `cannot overwrite non-directory ${dest} ` +
+            `with directory ${src}`,
         path: dest,
         syscall: 'cp',
         errno: EISDIR,
@@ -96,8 +96,8 @@ async function checkPaths(src, dest, opts) {
     }
     if (!srcStat.isDirectory() && destStat.isDirectory()) {
       throw new ERR_FS_CP_NON_DIR_TO_DIR({
-        message: `cannot overwrite non-directory ${src} ` +
-            `with directory ${dest}`,
+        message: `cannot overwrite directory ${dest} ` +
+            `with non-directory ${src}`,
         path: dest,
         syscall: 'cp',
         errno: ENOTDIR,