fix off by one right and bottom edges of tilegrid.contains()

Author: FoamyGuy

shared-module/displayio/TileGrid.c

@@ -345,8 +345,8 @@ void common_hal_displayio_tilegrid_set_transpose_xy(displayio_tilegrid_t *self,
 bool common_hal_displayio_tilegrid_contains(displayio_tilegrid_t *self, uint16_t x, uint16_t y) {
     uint16_t right_edge = self->x + (self->width_in_tiles * self->tile_width);
     uint16_t bottom_edge = self->y + (self->height_in_tiles * self->tile_height);
-    return x >= self->x && x <= right_edge &&
-           y >= self->y && y <= bottom_edge;
+    return x >= self->x && x < right_edge &&
+           y >= self->y && y < bottom_edge;
 }
 
 void common_hal_displayio_tilegrid_set_top_left(displayio_tilegrid_t *self, uint16_t x, uint16_t y) {