`getContextChangedKeys` only handles class components:
https://github.com/facebook/react/blob/355591add41c0f6dad738fdb1b6603e0786b7b4e/packages/react-devtools-shared/src/backend/renderer.js#L1276-L1304
messageCountMap.forEach(count => {
          newCount += count;
        });
      }
    }
    pendingFiberToMessageCountMap.delete(fiber);
    return newCount;
  }
  function recordPendingErrorsAndWarnings() {
    clearPendingErrorsAndWarningsAfterDelay();
    fibersWithChangedErrorOrWarningCounts.forEach(fiber => {
      const fiberID = getFiberIDUnsafe(fiber);
      if (fiberID === null) {
         D
      } else {
        const errorCount = mergeMapsAndGetCountHelper(
          fiber,
          fiberID,
          pendingFiberToErrorsMap,
          fiberIDToErrorsMap,
        );
        const warningCount = mergeMapsAndGetCountHelper(
          fiber,
          fiberID,
          pendingFiberToWarningsMap,
          fiberIDToWarningsMap,
        );