d[count]as leaves additional whitespace depending on cursor position

Describe the bug
hi i just started vim 2 hours ago so if its on me idk
what ive found is that if you have for example 4 sentences, you put cursor on the middle of sentence 2, then do d2as or 2das it will leave an additional blankspace.

To Reproduce
Steps to reproduce the behavior:

1. type at least 4 sentences of your preferred language. use . (dot) to signify its a sentence
2. move to middle of sentence 2
3. try to delete every subsequent sentences but the last ([count]das) where count is (4) - 2
4. See two whitespaces

Expected behavior
one whitespace.

Screenshots

Environment:

• Extension (VsCodeVim) version: 1.29.0
• VSCode version: 1.98.2
• OS: windows 11 24h2

Additional context

1. you can test with only 3 sentences, with cursor in middle of first sentence do d2as. error will happen but its going to be less evident.
2. expected behavior on vim

First reproduce the counted d2as and 2das cases in VSCodeVim using the four-sentence example, with the cursor in the positions described. Then trace the implementation of the d[count]as text-object handling and any related tests; done means deleting subsequent sentences leaves exactly one whitespace, matching Vim behavior.