update glslang, spirv-tools and spirv-opt to their latest version (#9845)

* update spirv-cross to a0fba56

* update spirv-tools to v2026.1

* update spirv-headers to 04f10f6

* update glslang to 16.2.0

third_party/spirv-tools/source/opt/function.cpp

@@ -40,6 +40,10 @@ Function* Function::Clone(IRContext* ctx) const {
   clone->blocks_.reserve(blocks_.size());
   for (const auto& b : blocks_) {
     std::unique_ptr<BasicBlock> bb(b->Clone(ctx));
+    if (!bb) {
+      delete clone;
+      return nullptr;
+    }
     clone->AddBasicBlock(std::move(bb));
   }