Debugger does not respect supportsDelayedStackTraceLoading false

<!-- ⚠️⚠️ 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. --> <!-- 🪓 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: 1.64.2 - OS Version: Windows_NT x64 10.0.19044 When the supportsDelayedStackTraceLoading is false or missing the debugger still makes a request with a limited `levels`: ``` -> stackTraceRequest { command: 'stackTrace', arguments: { threadId: 4, startFrame: 0, levels: 20 }, type: 'request', seq: 15 } ``` php-debug did not have an implementation for `startFrame` and `levels`, so when a stack of more than 20 levels happened, one could infinitely request "Load All Stack Frames". The [feature](https://github.com/xdebug/vscode-php-debug/pull/759) is being implemented, but wanted to point out this nevertheless. Btw. If the supportsDelayedStackTraceLoading is set to true, there are two stackTraceRequests - as expected and already discussed in other GH issues.