Ignore NoSuchFileException in TempDir cleanup (#3667)

While walking the temp directory, the file walker may fail to visit a
file that has been removed by another thread or process. In this case,
JUnit should ignore the NoSuchFileException, because there's nothing to
clean up.

(cherry picked from commit 6dbc84e)

Author: gilday

documentation/src/docs/asciidoc/release-notes/release-notes-5.10.3.adoc

@@ -32,7 +32,8 @@ on GitHub.
 
 ==== Bug Fixes
 
-* ❓
+* `TempDir` suppresses `NoSuchFileException` when deleting files that may have been deleted
+  by another thread or process.
 
 ==== Deprecations and Breaking Changes
 

junit-jupiter-engine/src/main/java/org/junit/jupiter/engine/extension/TempDirectory.java

@@ -338,6 +338,9 @@ public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
 
 				@Override
 				public FileVisitResult visitFileFailed(Path file, IOException exc) {
+					if (exc instanceof NoSuchFileException) {
+						return CONTINUE;
+					}
 					// IOException includes `AccessDeniedException` thrown by non-readable or non-executable flags
 					resetPermissionsAndTryToDeleteAgain(file, exc);
 					return CONTINUE;