spec : reset i_last when low acceptance streak occurs (#22168) #55

Job	Run time
windows-hip (radeon, gfx1150;gfx1151;gfx1200;gfx1201;gfx1100;gfx1101;gfx1102;gfx1030;gfx1031;gfx1...	1h 16m 16s
windows (opencl-adreno, arm64, -G "Ninja Multi-Config" -D CMAKE_TOOLCHAIN_FILE=cmake/arm64-window...	2m 38s
windows-sycl	13m 31s
ubuntu-cpu (s390x, ubuntu-24.04-s390x)	1d 0h 0m 1s
ubuntu-vulkan (x64, ubuntu-22.04)	7m 53s
android-arm64	4m 55s
windows (vulkan, x64, -DGGML_VULKAN=ON, ggml-vulkan)	5m 44s
ubuntu-cpu (x64, ubuntu-22.04)	4m 9s
ubuntu-24-openvino	5m 38s
ubuntu-22-rocm (7.2.1, gfx908;gfx90a;gfx942;gfx1030;gfx1100;gfx1101;gfx1102;gfx1151;gfx1150;gfx12...	1h 11m 37s
macOS-cpu (arm64-kleidiai, arm64, macos-14, -DGGML_METAL_USE_BF16=ON -DGGML_METAL_EMBED_LIBRARY=O...	1m 54s
windows-cpu (arm64)	5m 45s
macOS-cpu (x64, x64, macos-15-intel, -DGGML_METAL=OFF -DCMAKE_OSX_DEPLOYMENT_TARGET=13.3)	7m 41s
ubuntu-vulkan (arm64, ubuntu-24.04-arm)	5m 49s
windows-cuda (13.1)	4m 41s
ios-xcode-build	21m 41s
macOS-cpu (arm64, arm64, macos-14, -DGGML_METAL_USE_BF16=ON -DGGML_METAL_EMBED_LIBRARY=ON)	4m 29s
windows-cuda (12.4)	4m 23s
openEuler-cann (x86, 910b, Release, on)	14m 11s
openEuler-cann (aarch64, 310p, Release, off)	10m 1s
openEuler-cann (x86, 310p, Release, off)	11m 21s
openEuler-cann (aarch64, 910b, Release, on)	10m 9s
windows-cpu (x64)	5m 59s
ubuntu-cpu (arm64, ubuntu-24.04-arm)	4m 13s
release	0s
	1d 5h 4m 39s

Provide feedback