fix build failure due to duplicate libc++_shared.so (#27417)

Summary:
This PR fixes build failure caused by duplicate libc++_shared.so, because dependencies (like Flipper) might include one in addition to RN.

## Changelog

[Android] [Changed] - fix build failure due to duplicate libc++_shared.so
Pull Request resolved: #27417

Test Plan: Create a project from master, then build and run. Build will fail without the patch, and succeed with the patch.

Differential Revision: D18827583

Pulled By: mdvacca

fbshipit-source-id: 1272cedd299278403f87215c36aaf58217eae3c5

template/android/app/build.gradle

@@ -163,6 +163,14 @@ android {
             proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
         }
     }
+
+    packagingOptions {
+        pickFirst "lib/armeabi-v7a/libc++_shared.so"
+        pickFirst "lib/arm64-v8a/libc++_shared.so"
+        pickFirst "lib/x86/libc++_shared.so"
+        pickFirst "lib/x86_64/libc++_shared.so"
+    }
+
     // applicationVariants are e.g. debug, release
     applicationVariants.all { variant ->
         variant.outputs.each { output ->