Add a command to run/debug tests with the current filter from anywhere

<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- Please search existing issues to avoid creating duplicates. --> <!-- Describe the feature you'd like. --> Currently there is a way to run or debug all tests (commands `testing.runAll` or `testing.debugAll`), but it would be helpful if I could apply a filter to the Test Explorer and then still run those tests if I navigate back to the File Explorer. The commands `testing.runSelected` and `testing.debugSelected` do run with the current filter applied but they only work if you have to Test Explorer open, so if I navigate away from the Test Explorer to say the File Explorer or the debugger view then I cannot re-run those tests. The `testing.*Selected` commands both go through https://github.com/microsoft/vscode/blob/main/src/vs/workbench/contrib/testing/browser/testExplorerActions.ts#L261 which is currently tied to the TestingExplorerView. One way this could work is to have the `testing.*Selected` commands accept a filter as a parameter but default to the filter loaded into the TestingExplorerView if specified, otherwise it could run all tests. Let me know if that sounds reasonable and I could take a look at PR for that.