Reland "Avoid using lld when compiling iin iOS with bitcode"

This is a reland of commit b7ba6027659913883af3d64ec0fdfcba96176816

Original change's description:
> Avoid using lld when compiling iin iOS with bitcode
>
> The resulting framework's LLVM __bundle segment is empty otherwise.
>
> Bug: webrtc:13774
> Change-Id: I235a3005f8e0d68168f29108be0f7c5b7914182b
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/253140
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#36178}

Bug: webrtc:13774
Change-Id: Ia88b26d91bf1cf7323d04f024155ecf394498c41
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/256481
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36302}
diff --git a/tools_webrtc/ios/build_ios_libs.py b/tools_webrtc/ios/build_ios_libs.py
index 15a912e..9a4c3e3 100755
--- a/tools_webrtc/ios/build_ios_libs.py
+++ b/tools_webrtc/ios/build_ios_libs.py
@@ -180,6 +180,7 @@
                  ('true' if libvpx_build_vp9 else 'false'))
 
   gn_args.append('enable_ios_bitcode=' + ('true' if use_bitcode else 'false'))
+  gn_args.append('use_lld=' + ('false' if use_bitcode else 'true'))
   gn_args.append('use_goma=' + ('true' if use_goma else 'false'))
   gn_args.append('rtc_enable_objc_symbol_export=true')