[BUG] A SEGV in `draco::KdTreeAttributesDecoder::DecodeDataNeededByPortableTransforms` at `src/draco/compression/attributes/kd_tree_attributes_decoder.cc:453`

## Description

- Version: Latest commit [4e12ab2](https://github.com/google/draco/commit/4e12ab27d0fe690cf98e96dc33c2bd52e1485163)
- Environment:Ubuntu 20.04.6 LTS, Clang 18.1.8

## Steps to reproduce

```bash
export CC="clang"
export CXX="clang++"
export CFLAGS="-fsanitize=address -g -O0 -fno-omit-frame-pointer"
export CXXFLAGS="-fsanitize=address -g -O0 -fno-omit-frame-pointer -stdlib=libc++"
export LIB_FUZZING_ENGINE="-fsanitize=fuzzer"
export SRC=$PWD
export WORK=$SRC/build
mkdir -p $WORK
git clone https://github.com/google/draco
cd draco && git checkout 4e12ab2
cd $WORK
cmake ../draco
make -j$(nproc)

for fuzzer in $(find $SRC/draco/src/draco/tools/fuzz -name '*.cc'); do
fuzzer_basename=$(basename -s .cc $fuzzer)
$CXX $CXXFLAGS \
-I $SRC/ \
-I $SRC/draco/src \
-I $WORK/ \
$LIB_FUZZING_ENGINE \
$fuzzer \
$WORK/libdraco.a \
-o $WORK/$fuzzer_basename
done

wget https://github.com/user-attachments/files/20199653/draco_crash_4.txt -O draco_crash_4.in
$WORK/draco_pc_decoder_fuzzer draco_crash_4.in
```

## Sanitizer output

```
==792==ERROR: AddressSanitizer: SEGV on unknown address 0x604000000034 (pc 0x604000000034 bp 0x7fffda6634d0 sp 0x7fffda663438 T0)
==792==The signal is caused by a READ memory access.
==792==Hint: PC is at a non-executable region. Maybe a wild jump?
#0 0x604000000034 ()

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV ()
==792==ABORTING
```

## GDB backtrace

```
#21 0x00000000007a26ef in draco::KdTreeAttributesDecoder::DecodeDataNeededByPortableTransforms (
this=0x60d000000040, in_buffer=0x7ffe8cd85ac0)
at /src/draco/src/draco/compression/attributes/kd_tree_attributes_decoder.cc:453
```

## POC

[draco_crash_4.txt](https://github.com/user-attachments/files/20199653/draco_crash_4.txt)

## Credit

Reported by Yifan Zhang, [PLL](https://pl.cs.pku.edu.cn/en/)