Document scroll width is not calculated when shortening lines

<!-- ⚠️⚠️ 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 <!-- 🪓 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. --> VSCode Version: 1.74.1 OS: Linux x64 5.10.147-20158-g0a75306e5639 Steps to Reproduce: 1. Create a document with contents such as: ```js // This is a longer comment that will cause the issue to be revealed when more text is typed, expanding the width. // A short comment <above line but about 30 more times> ``` 2. Reopen the document to recalculate original length. 3. Notice scroll width is only sufficient to show longest line of code. 4. Type more text on line 1 until scroll width is increased 5. remove your newly typed code so the entire line fits on screen 6. notice the scroll width does not decrease 7. click enter to recalculate scroll width ## Expected outcome: Scroll width is updated on line width shrinking as it are on growth, thereby reducing the scroll width ## Actual outcome: Scroll width is not update until a line is added or remove or the editor is reopened. Even saving doesn't recalculate the scroll width. ## Notes: * This is also an issue with line decorations, sin…