message: Bump eager stack trace size from 10 to 30
  When creating resources, 10 frames would only contain internal TF frames, which
  do not contain useful information.
diff: @@ -52,7 +52,7 @@ using StackTraceFilter = std::function<bool(const char*)>;
  // A class for capturing Python stack trace.
  class StackTrace final {
  public:
  - static constexpr int kStackTraceInitialSize = 10;
  + static constexpr int kStackTraceInitialSize = 30;
  StackTrace() {}
  