Enable `subgroup-size-control` as a stable feature

This patch enables `subgroup-size-control` as a stable feature
instead of a experimental one after the approval of "Intent to Ship"
(https://groups.google.com/a/chromium.org/g/blink-dev/c/Lx06y9Rdzvs).

Bug: 463721943
Change-Id: I837b077090c54ebc07849a6d1b159783f6616236
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/319695
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Loko Kung <lokokung@google.com>
Commit-Queue: Shao, Jiawei <jiawei.shao@intel.com>

src/dawn/native/Features.cpp

diff --git a/src/dawn/native/Features.cpp b/src/dawn/native/Features.cpp
index 5d877f0..044b8b4 100644
--- a/src/dawn/native/Features.cpp
+++ b/src/dawn/native/Features.cpp
@@ -444,7 +444,7 @@
      {"Support the \"enable subgroup_size_control;\" directive in WGSL.",
       "https://dawn.googlesource.com/dawn/+/refs/heads/main/docs/tint/extensions/"
       "subgroup_size_control.md",
-      FeatureInfo::FeatureState::Experimental}},
+      FeatureInfo::FeatureState::Stable}},
     {Feature::AtomicVec2uMinMax,
      {"Support the \"enable atomic_vec2u_min_max;\" directive for 64-bit atomics via vec2<u32> "
       "types",

src/dawn/tests/unittests/validation/ShaderModuleValidationTests.cpp

diff --git a/src/dawn/tests/unittests/validation/ShaderModuleValidationTests.cpp b/src/dawn/tests/unittests/validation/ShaderModuleValidationTests.cpp
index f87607c..70c07bd 100644
--- a/src/dawn/tests/unittests/validation/ShaderModuleValidationTests.cpp
+++ b/src/dawn/tests/unittests/validation/ShaderModuleValidationTests.cpp
@@ -977,7 +977,7 @@
     {"chromium_experimental_framebuffer_fetch", true, {wgpu::FeatureName::FramebufferFetch}, {}},
     {"chromium_experimental_subgroup_matrix", true, {wgpu::FeatureName::ChromiumExperimentalSubgroupMatrix}, {}},
     {"chromium_experimental_resource_table", true, {wgpu::FeatureName::ChromiumExperimentalSamplingResourceTable}, {}},
-    {"subgroup_size_control", true, {wgpu::FeatureName::SubgroupSizeControl}, {"subgroups"}},
+    {"subgroup_size_control", false, {wgpu::FeatureName::SubgroupSizeControl}, {"subgroups"}},
     {"atomic_vec2u_min_max", true, {wgpu::FeatureName::AtomicVec2uMinMax}, {}}
 
     // Currently the following WGSL extensions are not enabled under any situation.