Properly split the "Too Old Version of React Native" message

Summary:
The bot message is split in a wrong way:
#38603 (comment)
I'm updating it to use `<br/><br/>` instead which renders correctly inside tables.

Changelog:
[Internal] [Changed] - Properly split the "Too Old Version of React Native" message

Reviewed By: NickGerleman

Differential Revision: D47764363

fbshipit-source-id: 7a80f03b4228a3f0c69d718b8eb60ecd4ac60a2b

.github/workflow-scripts/actOnLabel.js

@@ -129,15 +129,15 @@ module.exports = async (github, context, labelWithContext) => {
       await addComment(
         `| :warning: | Unsupported Version of React Native |\n` +
           `| --- | --- |\n` +
-          `| :information_source: | It looks like your issue or the example you provided uses an [unsupported version of React Native](https://github.com/reactwg/react-native-releases/blob/main/README.md#releases-support-policy). Due to the number of issues we receive, we're currently only accepting new issues against one of the supported versions. Please [upgrade](https://reactnative.dev/docs/upgrading) to latest and verify if the issue persists (alternatively, create a new project and repro the issue in it). If you cannot upgrade, please open your issue on [StackOverflow](https://stackoverflow.com/questions/tagged/react-native) to get further community support. |`,
+          `| :information_source: | It looks like your issue or the example you provided uses an [unsupported version of React Native](https://github.com/reactwg/react-native-releases/blob/main/README.md#releases-support-policy).<br/><br/>Due to the number of issues we receive, we're currently only accepting new issues against one of the supported versions. Please [upgrade](https://reactnative.dev/docs/upgrading) to latest and verify if the issue persists (alternatively, create a new project and repro the issue in it). If you cannot upgrade, please open your issue on [StackOverflow](https://stackoverflow.com/questions/tagged/react-native) to get further community support. |`,
       );
       await requestAuthorFeedback();
       return;
     case 'Type: Too Old Version':
       await addComment(
         `| :warning: | Too Old Version of React Native |\n` +
           `| --- | --- |\n` +
-          `| :information_source: | It looks like your issue or the example you provided uses a [**Too Old Version of React Native**](https://github.com/reactwg/react-native-releases/blob/main/README.md#releases-support-policy).\nDue to the number of issues we receive, we're currently only accepting new issues against one of the supported versions. Please [upgrade](https://reactnative.dev/docs/upgrading) to latest and verify if the issue persists (alternatively, create a new project and repro the issue in it). If you cannot upgrade, please open your issue on [StackOverflow](https://stackoverflow.com/questions/tagged/react-native) to get further community support. |`,
+          `| :information_source: | It looks like your issue or the example you provided uses a [**Too Old Version of React Native**](https://github.com/reactwg/react-native-releases/blob/main/README.md#releases-support-policy).<br/><br/>Due to the number of issues we receive, we're currently only accepting new issues against one of the supported versions. Please [upgrade](https://reactnative.dev/docs/upgrading) to latest and verify if the issue persists (alternatively, create a new project and repro the issue in it). If you cannot upgrade, please open your issue on [StackOverflow](https://stackoverflow.com/questions/tagged/react-native) to get further community support. |`,
       );
       await closeIssue();
       return;