[rtexture] Drawing texture with negative width or height draws nothing

[lxmcf]

Issue description

When drawing a sprite with a negative value on only 1 axis; the sprite will not be rendered.

When using a negative value on the x and y axis, will render as expected, code example should have expected behaviour of the image only being flipped on the xaxis.

Environment

Fedora Workstation 40, OpenGL 4.6, Intel ADL Gt2 and rx7900xt GPU tested.

Issue Screenshot

Code Example

#include <raylib.h>

int main () {
    InitWindow (640, 360, "Hello World");

    Texture2D texture = LoadTexture ("image.png");

    while (!WindowShouldClose ()) {
        BeginDrawing ();
        ClearBackground (SKYBLUE);

        Rectangle source = {
            .x      = 0,
            .y      = 0,
            .width  = (float)texture.width,
            .height = (float)texture.height,
        };

        Rectangle destination = {
            .x      = 320,
            .y      = 180,
            .width  = -(float)texture.width,
            .height = (float)texture.height,
        };

        DrawTexturePro (texture, source, destination, CLITERAL (Vector2){0, 0}, 0, WHITE);
        EndDrawing ();
    }

    UnloadTexture (texture);

    CloseWindow ();
}

[raysan5]

@lxmcf Yes, this is the expected behaviour. Destination width/height can not be negative. Added an additional check.