fix(vg_lite): fix clip corner image display error

[FASTSHIFT]

Description of the feature or fix

void test_demo()
{
    lv_obj_t* main_obj = lv_obj_create(lv_scr_act());
    lv_obj_add_flag(main_obj, LV_OBJ_FLAG_IGNORE_LAYOUT);
    lv_obj_set_style_pad_all(main_obj, 0, 0);
    lv_obj_set_style_radius(main_obj, 50, 0);
    lv_obj_set_style_clip_corner(main_obj, true, 0);
    lv_obj_set_style_bg_color(main_obj, lv_palette_main(LV_PALETTE_BLUE), 0);
    lv_obj_set_width(main_obj, 160);
    lv_obj_set_pos(main_obj, 20, 10);

    lv_obj_t* img = lv_image_create(main_obj);
    lv_image_set_src(img, "A:lvgl/examples/libs/libjpeg_turbo/flower.jpg");
}

Before:

After:

Notes

• Update the Documentation if needed.
• Add Examples if relevant.
• Add Tests if applicable.
• If you added new options to lv_conf_template.h run lv_conf_internal_gen.py and update Kconfig.
• Run scripts/code-format.py (astyle needs to be installed) and follow the Code Conventions
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[kisvegabor]

On the "after" image the the radius of the background ans image are not perfectly the same.

[FASTSHIFT]

On the "after" image the the radius of the background ans image are not perfectly the same.

This may be caused by the inconsistency between thorvg's corner rounding algorithm and lvgl, which is not obvious on the device.