Merge branch 'upstream' into concedo_experimental

# Conflicts:
#	.github/pull_request_template.md
#	.gitignore
#	docs/backend/SYCL.md
#	docs/ops.md
#	docs/ops/WebGPU.csv
#	examples/sycl/test.sh
#	examples/sycl/win-test.bat
#	ggml/src/ggml-sycl/common.hpp
#	ggml/src/ggml-sycl/ggml-sycl.cpp
#	ggml/src/ggml-sycl/sycl_hw.cpp
#	ggml/src/ggml-sycl/sycl_hw.hpp
#	ggml/src/ggml-webgpu/ggml-webgpu-shader-lib.hpp
#	ggml/src/ggml-webgpu/ggml-webgpu.cpp

Author: LostRuins

src/llama-quant.cpp

@@ -1285,7 +1285,7 @@ static void llama_model_quantize_impl(const std::string & fname_inp, const std::
 llama_model_quantize_params llama_model_quantize_default_params() {
     llama_model_quantize_params result = {
         /*.nthread                     =*/ 0,
-        /*.ftype                       =*/ LLAMA_FTYPE_MOSTLY_Q5_1,
+        /*.ftype                       =*/ LLAMA_FTYPE_MOSTLY_Q8_0,
         /*.output_tensor_type          =*/ GGML_TYPE_COUNT,
         /*.token_embedding_type        =*/ GGML_TYPE_COUNT,
         /*.allow_requantize            =*/ false,