fix: wrap isSmallTextFile in try-catch to handle checked IOException in stream filter

src/main/java/com/dostalgia/UploadResource.java

@@ -497,7 +497,10 @@ public class UploadResource {
             "[A-Za-z]:(\\\\|/)[^\\s\"\\r\\n]+");
         try (var walk = Files.walk(extractDir)) {
             walk.filter(Files::isRegularFile)
-                .filter(f -> isSmallTextFile(f))
+                .filter(f -> {
+                    try { return isSmallTextFile(f); }
+                    catch (IOException e) { return false; }
+                })
                 .forEach(f -> {
                     try {
                         byte[] data = Files.readAllBytes(f);