Create Declaration / Definition incorrectly adds the definition into a function

[sean-mcmanus]

test.h

void func();

test.cpp

int main()
{
    return 0;
}

Bug: It creates invalid code:

#include "test.h"
int main()
{

    void func()
    {
    }
    return 0;
}

[michelleangela]

This is the same issue as #10464. The issue is in typescript, where there are two text edits and it calculates or adjusts the edit positions.

If there are at least 2 lines after the last function or namespace scope, then it doesn't repro.