lv_draw_layer_adjust() function
Adjust the layer_ctx and/or draw_ctx based on the `layer_ctx->area_act`. It's called only if flags has `LV_DRAW_LAYER_FLAG_CAN_SUBDIVIDE`
Arguments
draw_ctx
pointer to the current draw context
layer_ctx
pointer to a layer context
flags
OR-ed flags from @lv_draw_layer_flags_t