Option to *not* close file marked as viewed via keybinding

When you mark a file as viewed through the active editor menu bar or through a keybinding, the file will close. When you mark it as viewed through the tree view then it will not close. If a setting is needed I'll add one, but my hope is that this behavior is better for almost everyone.

Originally posted by @alexr00 in https://github.com/microsoft/vscode-pull-request-github/issues/3513#issuecomment-1284469843

Per this comment, it seems the default behavior for keybindings (or editor menu bar) calling pr.markFileAsViewed is to close the file, but for my workflow I'd prefer it didn't. Is it possible to add either a config setting, new command, or allow "args" in the keybinding to disable closing the active editor when this command is executed?

If it would be accepted, I could also attempt a PR for whichever of those options seems preferable. Thanks!

Edit: as a workaround (at least for keybindings) I found this seems to work okay - although the visual effect of closing and immediately reopening the editor is a bit jarring:

    {
        "key": "alt+j",
        "command": "runCommands",
        "args": {
            "commands": [
                "pr.markFileAsViewed",
                "workbench.action.reopenClosedEditor",
            ]
        },
        "when": "editorTextFocus && github:inReviewMode && isInDiffEditor",
    }

Start by tracing the pr.markFileAsViewed command from its keybinding and active editor menu-bar entry points, comparing them with the tree-view behavior described in the issue. No source files or tests are named; done means providing an accepted way to invoke the command without closing the active editor while preserving the existing behavior by default.