[split_config.arm64_v8a.apk!librealm_dart.so] realm_commit ANR on Android 10 & 11

### What happened? After upgrading to realm_dart: ^20.2.0 (latest), my production app started showing ANRs in Google Play Console. The ANR always points to realm_commit inside librealm_dart.so, blocking on fsync **Environment** - Flutter: 3.35.4 - Dart: 3.9.2 - Android SDK: 35.0.0 - Devices affected: Android 10 & Android 11 mostly - Architecture: arm6-v8a - Realm: realm_dart: 20.2.0 Issue did not happen on earlier versions of realm_dart. ANR happens during commit/write transactions. My app performs small Realm writes, nothing heavy. Database size is small (~ few MB). Cannot reproduce locally even with stress testing. Only visible in production ANR reports. ### Repro steps The issue is not reproducible in debug or release locally, only reported by Play Store (real users). ### Version Flutter version 3.35.4 Dart version 3.9.2 ### What Atlas Services are you using? Local Database only ### What type of application is this? Flutter Application ### Client OS and version Android 10 & 11 ### Code snippets _No response_ ### Stacktrace of the exception/crash you're getting ```shell **Play Store ANR Stacktrace** `Input dispatching timed out, "main" tid=1 Native #00 pc 0x00000000000d16c8 /apex/com.android.runtime/lib64/bionic/libc.so (fsync+8) #01 pc 0x00000000005dd704 .../split_config.arm64_v8a.apk!librealm_dart.so #02 pc 0x0000000000562c88 .../split_config.arm64_v8a.apk!librealm_dart.so #03 pc 0x000000000055af10 .../split_config.arm64_v8a.apk!librealm_dart.so #04 pc 0x000000000055ac88 .../split_config.arm64_v8a.apk!librealm_dart.so #05 pc 0x00000000005bd41c .../split_config.arm64_v8a.apk!librealm_dart.so #06 pc 0x00000000004752a8 .../split_config.arm64_v8a.apk!librealm_dart.so #07 pc 0x000000000044b844 .../split_config.arm64_v8a.apk!librealm_dart.so #08 pc 0x00000000004096e4 .../split_config.arm64_v8a.apk!librealm_dart.so (realm_commit+12) #09 pc 0x000000000001158c .../split_config.arm64_v8a.apk at android.os.MessageQueue.nativePollOnce at android.os.Looper.loop at android.app.ActivityThread.main ` ``` ### Relevant log output ```shell ```