arm: Fix build issue related to latomic

This is to avoid the below issue for arm build

```
5267.3 ld.lld-18: error: undefined symbol: __atomic_compare_exchange
5267.3 >>> referenced by wasm-import-wrapper-cache.cc
5267.3 >>>               bazel-out/aarch64-opt-exec-ST-5dc91bda6aaf/bin/external/v8/_objs/v8_libshared_noicu/wasm-import-wrapper-cache.o:(v8::internal::wasm::WasmImportWrapperHandle::~WasmImportWrapperHandle())
5267.3 >>> referenced by wasm-code-pointer-table.cc
5267.3 >>>               bazel-out/aarch64-opt-exec-ST-5dc91bda6aaf/bin/external/v8/_objs/v8_libshared_noicu/wasm-code-pointer-table.o:(v8::internal::wasm::WasmCodePointerTable::FreeNativeFunctionHandles())
5267.3 >>> referenced by wasm-code-pointer-table.cc
5267.3 >>>               bazel-out/aarch64-opt-exec-ST-5dc91bda6aaf/bin/external/v8/_objs/v8_libshared_noicu/wasm-code-pointer-table.o:(v8::internal::wasm::WasmCodePointerTable::SweepSegments(unsigned long))
5267.3 >>> referenced 5 more times
```

Author: sayboras

WORKSPACE

@@ -43,6 +43,7 @@ git_repository(
         "@//patches:0004-thread_local-reset-slot-in-worker-threads-first.patch",
         "@//patches:0005-http-header-expose-attribute.patch",
         "@//patches:0006-build-Fix-arm-build-for-liburing.patch",
+        "@//patches:0007-Add-latomic-back-for-arm-build.patch",
     ],
     # // clang-format off: Envoy's format check: Only repository_locations.bzl may contains URL references
     remote = "https://github.com/envoyproxy/envoy.git",

patches/0007-Add-latomic-back-for-arm-build.patch

@@ -0,0 +1,25 @@
+From 4dad6252057e395d8c87831419e6e05d55d323a6 Mon Sep 17 00:00:00 2001
+From: Tam Mach <sayboras@yahoo.com>
+Date: Fri, 12 Dec 2025 13:45:27 +1100
+Subject: [PATCH] Add latomic back for arm build
+
+---
+ bazel/v8.patch | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/bazel/v8.patch b/bazel/v8.patch
+index 9b0cb2374f..512b22ebf4 100644
+--- a/bazel/v8.patch
++++ b/bazel/v8.patch
+@@ -284,7 +284,7 @@ index 39663c97df4..14b90ec6905 100644
+              ],
+              "@v8//bazel/config:is_macos": ["-pthread"],
+ -            "//conditions:default": ["-Wl,--no-as-needed -ldl -latomic -pthread"],
+-+            "//conditions:default": ["-Wl,--no-as-needed -ldl -pthread"],
+++            "//conditions:default": ["-Wl,--no-as-needed -ldl -latomic -pthread"],
+          }) + select({
+              ":should_add_rdynamic": ["-rdynamic"],
+              "//conditions:default": [],
+-- 
+2.43.0
+