Chrome update action is failing

[ilonatommy]

The last successful run was https://github.com/dotnet/runtime/actions/runs/9629178182.

1. update chrome manually
2. investigate why the action cannot succeed, it fails on UpdateToLatestVersion step, with various errors:

https://github.com/dotnet/runtime/actions/runs/9727796576/job/26847753285 and https://github.com/dotnet/runtime/actions/runs/9822989068/job/27120326942

Time Elapsed 00:00:01.42
cat: eng/testing/bump-chrome-pr.env: No such file or directory

all the later runs with:

make: Leaving directory '/home/runner/work/runtime/runtime/src/mono/wasm'

/home/runner/work/runtime/runtime/eng/testing/bump-chrome-version.proj(11,5): error MSB4062: The "Microsoft.WebAssembly.Build.Tasks.UpdateChromeVersions" task could not be loaded from the assembly /home/runner/work/runtime/runtime/artifacts/bin/WasmBuildTasks/Release/net9.0/publish/WasmBuildTasks.dll. Could not load file or assembly '/home/runner/work/runtime/runtime/artifacts/bin/WasmBuildTasks/Release/net9.0/publish/WasmBuildTasks.dll'. The system cannot find the file specified.
/home/runner/work/runtime/runtime/eng/testing/bump-chrome-version.proj(11,5): error MSB4062:  Confirm that the <UsingTask> declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask.

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