Linux native assets integration is flaky on devicelab #135461
Description
See https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20framework_tests_slow/5675/overview
Why is this running on a unit test?
Exception: Failed to find clang++ on PATH.
package:flutter_tools/src/base/common.dart 10:3 throwToolExit
package:flutter_tools/src/linux/native_assets.dart 219:5 cCompilerConfigLinux
===== asynchronous gap ===========================
package:flutter_tools/src/linux/native_assets.dart 108:22 buildNativeAssetsLinux
===== asynchronous gap ===========================
package:flutter_tools/src/test/test_compiler.dart 191:35 TestCompiler._onCompilationRequest