Add fix for older Android Gradle plugin (#4707)

* Add fix for older android gradle plugin

* Add fallback for older android gradle plugin

* Add changelog

* Revert change to test app build.gradle so we are testing the older version on CI

CHANGELOG.md

@@ -4,8 +4,7 @@ x.x.x Release notes (yyyy-MM-dd)
 * None.
 
 ### Fixed
-* <How to hit and notice issue? what was the impact?> ([#????](https://github.com/realm/realm-js/issues/????), since v?.?.?)
-* None.
+* Fixed inadvertent change to minimum Android Gradle plugin version ([#4706](https://github.com/realm/realm-js/issues/4706), since v10.19.4)
 
 ### Compatibility
 * Atlas App Services.

react-native/android/build.gradle

@@ -57,7 +57,11 @@ android {
     buildTypes {
         debug {
             packagingOptions {
-                jniLibs.keepDebugSymbols += "**/librealm.so"
+                if (com.android.builder.model.Version.ANDROID_GRADLE_PLUGIN_VERSION.compareTo("4.2") >= 0) {
+                    jniLibs.keepDebugSymbols += "**/librealm.so"
+                } else {
+                    doNotStrip "**/librealm.so"
+                }
             }
         }
     }

tests/ReactTestApp/android/build.gradle

@@ -13,7 +13,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath('com.android.tools.build:gradle:4.2.2')
+        classpath('com.android.tools.build:gradle:4.1.2')
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }

tests/ReactTestApp/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.9-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists