Update --local-engine to account for changed host architecture of 32-bit Android debug builds. (#11263)

Roll engine to 03e642bc8940441bbad5c2fb7d3ca868c1fdad54.
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 2aab9c8..d617a3a 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-f56da86f9807a7d4c924cdb5a28d77baad0537b1
+03e642bc8940441bbad5c2fb7d3ca868c1fdad54
diff --git a/packages/flutter_tools/lib/src/artifacts.dart b/packages/flutter_tools/lib/src/artifacts.dart
index 565ce34..d316a8d 100644
--- a/packages/flutter_tools/lib/src/artifacts.dart
+++ b/packages/flutter_tools/lib/src/artifacts.dart
@@ -212,7 +212,7 @@
 
   String _genSnapshotPath(TargetPlatform platform, BuildMode mode) {
     String clang;
-    if (platform == TargetPlatform.ios || mode == BuildMode.debug) {
+    if (platform == TargetPlatform.ios) {
       clang = 'clang_x64';
     } else {
       clang = getCurrentHostPlatform() == HostPlatform.darwin_x64 ? 'clang_i386' : 'clang_x86';