Update WIP Plant

[sun-415]

Change to the next plant when progress bar is completed, meaning the user has reached next level by getting to certain amount of points. In short:

• When the user’s points reach a threshold for a new level, the plant updates to the next design in the sequence.
• The transition between plant levels is smooth, with no abrupt changes that disrupt the user experience.
• If feasible, add an animation or effect (e.g., fade-in) to emphasize the growth and new plant design.