ResizeWithReflow doesn't clamp _virtualBottom if the cursor is above the viewport

[lhecker]

Windows Terminal version

1a6ba43

Windows build number

No response

Other Software

No response

Steps to reproduce

TBA: Exact steps unclear, but it was found by @zadjii-msft in #16937 as part of reflow tests.
However, repro steps aren't quite necessary as the flaw can be clearly seen here:

terminal/src/host/screenInfo.cpp

Lines 1404 to 1407 in 1a6ba43

	_virtualBottom = std::max({ lastNonSpaceRow, estimatedBottom, viewportBottom });
	// We can't let it extend past the bottom of the buffer either.
	_virtualBottom = std::min(_virtualBottom, newTextBuffer->GetSize().BottomInclusive());

There's no min(). (Alternatively, you can just patch Reflow() to put the cursor at 0,0 after a reflow.)

Terminal::UserResize doesn't use its newCursorPos either.

Expected Behavior

No response

Actual Behavior

The viewport should always contain the cursor, even if the cursor is above the viewport.