ascent png encoding fails with large images

[cyrush]

testing tiled rendering with 16192x16192 output image

Loguru caught a signal: SIGSEGV
Stack trace:
23         0x1989aeb98 start + 6076
22         0x1006e0864 main + 48
21         0x1006e0888 RUN_ALL_TESTS() + 16
20         0x1008b8a18 testing::UnitTest::Run() + 208
19         0x1008b8b20 bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) + 96
18         0x1008ed77c bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) + 140
17         0x1008b911c testing::internal::UnitTestImpl::RunAllTests() + 988
16         0x1008ab330 testing::TestSuite::Run() + 364
15         0x1008aa2c4 testing::TestInfo::Run() + 304
14         0x1008a9358 testing::Test::Run() + 192
13         0x1008a9408 void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) + 96
12         0x1008e4900 void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) + 140
11         0x1006e0160 ascent_tiling_test_tiling_Test::TestBody() + 4212
10         0x1019b7030 ascent::Ascent::execute(conduit::Node const&) + 1324
9          0x1019e0ca4 ascent::AscentRuntime::Execute(conduit::Node const&) + 2444
8          0x1007cbd8c flow::Workspace::execute() + 752
7          0x101d0b764 ascent::runtime::filters::ExecScene::execute() + 572
6          0x101d0c5a0 ascent::runtime::filters::detail::AscentScene::execute(std::vector<vtkh::Render>&) + 412
5          0x105190590 vtkh::Scene::Render() + 1728
4          0x10517e344 vtkh::Render::Save() + 120
3          0x1051a83a0 ascent::PNGEncoder::Encode(float const*, int, int, std::vector<std::string> const&) + 936
2          0x100e15550 lpng::lodepng_encode(unsigned char**, unsigned long*, unsigned char const*, unsigned int, unsigned int, lpng::LodePNGState*) + 752
1          0x100e105fc lpng::lodepng_convert(unsigned char*, unsigned char const*, lpng::LodePNGColorMode const*, lpng::LodePNGColorMode const*, unsigned int, unsigned int) + 756
0          0x100e105fc lpng::lodepng_convert(unsigned char*, unsigned char const*, lpng::LodePNGColorMode const*, lpng::LodePNGColorMode const*, unsigned int, unsigned int) + 756
2026-04-27 15:08:17.872 (  41.245s) [main thread     ]                       :0     FATL| Signal: SIGSEGV
Segmentation fault: 11