Fix buffer overflow error in KryoBackedDecoder

Fixes #19523

subprojects/messaging/src/main/java/org/gradle/internal/serialize/kryo/KryoBackedDecoder.java

@@ -168,21 +168,30 @@ public void skipChunked() throws EOFException, IOException {
     public <T> T decodeChunked(DecodeAction<Decoder, T> decodeAction) throws EOFException, Exception {
         if (nested == null) {
             nested = new KryoBackedDecoder(new InputStream() {
+                private int leftover = 0;
+
                 @Override
                 public int read() throws IOException {
                     throw new UnsupportedOperationException();
                 }
 
                 @Override
                 public int read(byte[] buffer, int offset, int length) throws IOException {
+                    if (leftover > 0) {
+                        int count = Math.min(leftover, length);
+                        leftover -= count;
+                        readBytes(buffer, offset, count);
+                        return count;
+                    }
+
                     int count = readSmallInt();
                     if (count == 0) {
                         // End of stream has been reached
                         return -1;
                     }
                     if (count > length) {
-                        // For now, assume same size buffers used to read and write
-                        throw new UnsupportedOperationException();
+                        leftover = count - length;
+                        count = length;
                     }
                     readBytes(buffer, offset, count);
                     return count;