(Java Parity) Don’t make all 4 map sizes

When a new map is opened in Bedrock is opened it automatically creates the other 3 sizes, creating huge file sizes. Don’t automatically create the extra map sizes!

• Level 0/4 : 128×128 blocks (each map pixel represents 1 block)
• Level 1/4 : 256×256 blocks (2×2 blocks per map pixel)
• Level 2/4 : 512×512 blocks (4×4 blocks per map pixel)
• Level 3/4 : 1024×1024 blocks (8×8 blocks per map pixel)
• Level 4/4 : 2048×2048 blocks (16×16 blocks per map pixel)