CNDB-16352: filterCommitLogFiles handles NoSuchFileException gracefully (#2186)

### What is the issue

FSReadError extends IOError, so it was not caught by the catch block in
filterCommitLogFiles(). This caused replayer failures when a remote
commit log file was listed but no longer accessible.

### What does this PR fix and why was it fixed

Only NoSuchFileException is handled gracefully; other IOErrors (such as
corruption) are re-thrown to fail the replay as intended.

Author: driftx

src/java/org/apache/cassandra/db/commitlog/CommitLogReader.java

@@ -17,6 +17,7 @@
  */
 package org.apache.cassandra.db.commitlog;
 
+import java.io.IOError;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.io.*;
@@ -119,6 +120,19 @@ static List<File> filterCommitLogFiles(File[] toFilter)
                 // let recover deal with it
                 filtered.add(file);
             }
+            catch (IOError e)
+            {
+                // Only handle file-not-found errors gracefully; let other IOErrors propagate
+                // as they may indicate corruption or serious I/O issues
+                if (e.getCause() instanceof java.nio.file.NoSuchFileException)
+                {
+                    filtered.add(file);
+                }
+                else
+                {
+                    throw e;
+                }
+            }
         }
 
         return filtered;