feat: Upgrade Gradle and Android build tools for callback system implementation

- Upgrade Android Gradle Plugin from 8.0.0 to 8.4.0
- Upgrade Google Services plugin from 4.3.15 to 4.4.0
- Upgrade Android SDK from API 33 to API 34
- Upgrade Gradle wrapper from 8.13 to 8.14
- Upgrade Android Gradle wrapper from 8.0.2 to 8.6
- Update AndroidX library versions for API 34 compatibility
- Fix Jest environment configuration issue
- All tests passing (58/58) after upgrades

Resolves: Gradle upgrade requirements for callback system implementation

android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists