TF-4269 Fix Sentry release version sync across platforms

Use --dart-define=SENTRY_RELEASE=<full-tag> in Fastlane so the app
reports the same version string to Sentry as CI uses when uploading
symbols, bypassing iOS CFBundleShortVersionString stripping.

- Android Fastfile: add --dart-define=SENTRY_RELEASE (build-name unchanged)
- iOS Fastfile: pass DART_DEFINES via xcargs (increment_version_number unchanged)
- Dart: read SENTRY_RELEASE dart-define first, fall back to PackageInfo.version
- NSE/Web unaffected: NSE reads from Keychain, Web falls back to PackageInfo

core/lib/utils/sentry/sentry_config.dart

@@ -78,24 +78,40 @@ class SentryConfig {
         && sentryEnvironment.trim().isNotEmpty;
     if (!isConfigValid) return null;
 
-    final appVersion = await ApplicationManager().getAppVersion();
+    final release = await _resolveRelease();
 
     const sentryDist = String.fromEnvironment('SENTRY_DIST');
     logTrace(
       'SentryConfig::load: sentryDist is $sentryDist, '
-      'appVersion is $appVersion',
+      'release is $release',
       webConsoleEnabled: true,
     );
 
     return SentryConfig(
       dsn: sentryDSN,
       environment: sentryEnvironment,
-      release: appVersion,
+      release: release,
       isAvailable: isAvailable,
       dist: sentryDist.isNotEmpty ? sentryDist : null,
     );
   }
 
+  /// Resolves the Sentry release string.
+  ///
+  /// Priority:
+  /// 1. `--dart-define=SENTRY_RELEASE=<version>` injected at build time by
+  ///    Fastlane/CI — guarantees the same string the CI uses to upload symbols.
+  /// 2. `PackageInfo.version` as fallback (local dev / non-release builds).
+  ///
+  /// Why dart-define takes priority: iOS CFBundleShortVersionString strips
+  /// pre-release suffixes (e.g. "0.28.3-rc09" → "0.28.3"), so PackageInfo
+  /// returns a different value than what CI tags the symbols with.
+  static Future<String> _resolveRelease() async {
+    const dartDefineRelease = String.fromEnvironment('SENTRY_RELEASE');
+    if (dartDefineRelease.isNotEmpty) return dartDefineRelease;
+    return ApplicationManager().getAppVersion();
+  }
+
   static const String sentryConfigKeyChain = 'sentry_config_data';
 
   Map<String, dynamic> toJson() {