/workspaces/runtime/src/mono/wasm/debugger/DebuggerTestSuite/TestHarnessProxy.cs(135,44): error CS8601: Possible null reference assignment

Started being hit with #82479 . It wasn't caught here because the wasm debugger tests job didn't run.
The other instances of this were fixed in #82803 .

Known Issue Error Message

Fill the error message using known issues guidance.

{
  "ErrorMessage": "TestHarnessProxy.cs(135,44): error CS8601: Possible null reference assignment",
  "BuildRetry": false
}