Notifications should allow new-lines

Currently any text passed to a Notification is stripped from any included new-lines/carriage returns: https://github.com/microsoft/vscode/blob/main/src/vs/workbench/common/notifications.ts#L497 The comment in code says that it complicates linkparsing, but that seems solveable. An [earlier issue](https://github.com/microsoft/vscode/issues/48900) filed for this was resolved won't fix, but no real argument was given for this -- the argument was simply _"Notifications are imho not the right place to show structured text with formatting."_. I respectfully disagree. Whitespace such as newlines are critical to make any text that is longer than a single paragraph readable. Please reconsider. <!-- ⚠️⚠️ Do Not Delete This! bug_report_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- 🕮 Read our guide about submitting issues: https://github.com/microsoft/vscode/wiki/Submitting-Bugs-and-Suggestions --> <!-- 🔎 Search existing issues to avoid creating duplicates. --> <!-- 🧪 Test using the latest Insiders build to see if your issue has already been fixed: https://code.visualstudio.com/insiders/ --> <!-- 💡 Instead of creating your report here, use 'Report Issue' from the 'Help' menu in VS Code to pre-fill useful information. --> <!-- 🔧 Launch with `code --disable-extensions` to check. --> Does this issue occur when all extensions are disabled?: Yes/No <!-- 🪓 If you answered No above, use 'Help: Start Extension Bisect' from Command Palette to try to identify the cause. --> <!-- 📣 Issues caused by an extension need to be reported directly to the extension publisher. The 'Help > Report Issue' dialog can assist with this. --> - VS Code Version: 1.77.0 - OS Version: macOS Ventura Steps to Reproduce: n/a