Sticky Scroll partially breaks zt

Describe the bug
When stick scroll is enabled, zt behaves as if it can never go to the top of the file but is restricted to go as far as "top" - editor.stickyScroll.maxLineCount. Which means that, if editor.stickyScroll.maxLineCount is 20, zt will always have a scroll offset of 20, independent of how many lines stick scroll may actually be showing/using.

To Reproduce

1. Set editor.stickyScroll.maxLineCount option to 20
2. Use zt in normal mode
3. Observe that "top" of zt is 20 lines below the top.

Expected behavior
Either go to the actual top as if no scroll offset would exist, independent of what sticky scrolling may be showing, or to to the line directly below the actual content of sticky scroll. Don't use editor.stickyScroll.maxLineCount as fixed scroll offset.

Screenshots

Environment (please complete the following information):

• Extension (VsCodeVim) version: v1.27.3
• VSCode version: 1.91.1
• OS: Linux

Additional context

Reproduce the issue in VS Code 1.91.1 with VSCodeVim v1.27.3, editor.stickyScroll.maxLineCount set to 20, and zt in normal mode. Compare zt's top position with sticky scroll disabled and with different visible sticky-content lengths; the fix is complete when zt can reach the actual top or the line directly below the displayed sticky content rather than using the configured maximum as a fixed offset.