Fix CURRENT_ARCH for Apple Silicon simulator (facebook#54429)

Summary:
Fix the arch issue when running `pod install` on M4

## Changelog:
[iOS] [Fixed] - Set the `CURRENT_ARCH=arm64` on M4
<!-- Help reviewers and the release process by writing your own changelog entry.

Pick one each for the category and type tags:

[IOS][Fixed] - Message

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-->

## Issue log
```shell
Installing glog (0.3.5)
[!] /bin/bash -c
set -e
#!/bin/bash
# Copyright (c) Facebook, Inc. and its affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.

set -e

PLATFORM_NAME="${PLATFORM_NAME:-iphoneos}"
CURRENT_ARCH="${CURRENT_ARCH}"

if [ -z "$CURRENT_ARCH" ] || [ "$CURRENT_ARCH" == "undefined_arch" ]; then
    # Xcode 10 beta sets CURRENT_ARCH to "undefined_arch", this leads to incorrect linker arg.
    # it's better to rely on platform name as fallback because architecture differs between simulator and device

    if [[ "$PLATFORM_NAME" == *"simulator"* ]]; then
        CURRENT_ARCH="x86_64"
    else
        CURRENT_ARCH="armv7"
    fi
fi

export CC="$(xcrun -find -sdk $PLATFORM_NAME cc) -arch $CURRENT_ARCH -isysroot $(xcrun -sdk $PLATFORM_NAME --show-sdk-path)"
export CXX="$CC"

# Remove automake symlink if it exists
if [ -h "test-driver" ]; then
    rm test-driver
fi

./configure --host arm-apple-darwin

# Fix build for tvOS
cat << EOF >> src/config.h

/* Add in so we have Apple Target Conditionals */
#ifdef __APPLE__
#include <TargetConditionals.h>
#include <Availability.h>
#endif

/* Special configuration for AppleTVOS */
#if TARGET_OS_TV
#undef HAVE_SYSCALL_H
#undef HAVE_SYS_SYSCALL_H
#undef OS_MACOSX
#endif

/* Special configuration for ucontext */
#undef HAVE_UCONTEXT_H
#undef PC_FROM_UCONTEXT
#if defined(__x86_64__)
#define PC_FROM_UCONTEXT uc_mcontext->__ss.__rip
#elif defined(__i386__)
#define PC_FROM_UCONTEXT uc_mcontext->__ss.__eip
#endif
EOF

# Prepare exported header include
EXPORTED_INCLUDE_DIR="exported/glog"
mkdir -p exported/glog
cp -f src/glog/log_severity.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/logging.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/raw_logging.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/stl_logging.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/vlog_is_on.h "$EXPORTED_INCLUDE_DIR/"

checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for arm-apple-darwin-strip... no
checking for strip... strip
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for arm-apple-darwin-gcc... /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.0.sdk
checking whether the C compiler works... no
/Library/Caches/CocoaPods/Pods/Release/glog/0.3.5-bc4e6/missing: Unknown `--is-lightweight' option
Try `/Library/Caches/CocoaPods/Pods/Release/glog/0.3.5-bc4e6/missing --help' for more information
configure: WARNING: 'missing' script is too old or missing
configure: error: in `/Library/Caches/CocoaPods/Pods/Release/glog/0.3.5-bc4e6':
configure: error: C compiler cannot create executables
See `config.log' for more details
```

Pull Request resolved: facebook#54429

Reviewed By: huntie

Differential Revision: D86412238

Pulled By: cipolleschi

fbshipit-source-id: 6f23a77768c5a73e251e37e1f82c78efbeca27a5

Author: Iseektruth

packages/react-native/scripts/ios-configure-glog.sh

@@ -14,7 +14,12 @@ if [ -z "$CURRENT_ARCH" ] || [ "$CURRENT_ARCH" == "undefined_arch" ]; then
     # it's better to rely on platform name as fallback because architecture differs between simulator and device
 
     if [[ "$PLATFORM_NAME" == *"simulator"* ]]; then
-        CURRENT_ARCH="x86_64"
+        if [[ "$(uname -m)" == "arm64" ]]; then
+            # Apple Silicon Mac -> arm64 simulator
+            CURRENT_ARCH="arm64"
+        else
+            CURRENT_ARCH="x86_64"
+        fi
     else
         CURRENT_ARCH="arm64"
     fi