[#SPIGOT-6957] Bad default value for WorldCreator#generatorSettings

With the changes in this commit, Spigot fails to create worlds when using WorldCreator with WorldType.FLAT but without explicitly setting a generatorSettings string.

Code:
Bukkit.createWorld(WorldCreator.name("bug").type(WorldType.FLAT)); (can be put in a onEnable method or similar)

[20:45:43] [Server thread/INFO]: [SpigotWorldCreator] Enabling SpigotWorldCreator v1.0.0
[20:45:43] [Server thread/ERROR]: Error occurred while enabling SpigotWorldCreator v1.0.0 (Is it up to date?)
com.google.gson.JsonParseException: java.io.EOFException: End of input at line 1 column 1 path $
        at net.minecraft.util.ChatDeserializer.a(SourceFile:505) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at net.minecraft.util.ChatDeserializer.a(SourceFile:555) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at net.minecraft.util.ChatDeserializer.a(SourceFile:551) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at net.minecraft.util.ChatDeserializer.a(SourceFile:559) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at org.bukkit.craftbukkit.v1_18_R2.CraftServer.createWorld(CraftServer.java:1061) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at org.bukkit.Bukkit.createWorld(Bukkit.java:671) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at de.sirywell.spigotwc.SpigotWorldCreator.onEnable(SpigotWorldCreator.java:12) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:342) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:480) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.v1_18_R2.CraftServer.enablePlugin(CraftServer.java:517) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at org.bukkit.craftbukkit.v1_18_R2.CraftServer.enablePlugins(CraftServer.java:431) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:614) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:416) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:263) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1013) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:306) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        at java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: java.io.EOFException: End of input at line 1 column 1 path $
        at com.google.gson.stream.JsonReader.nextNonWhitespace(JsonReader.java:1395) ~[gson-2.8.9.jar:?]
        at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:548) ~[gson-2.8.9.jar:?]
        at com.google.gson.stream.JsonReader.peek(JsonReader.java:424) ~[gson-2.8.9.jar:?]
        at com.google.gson.internal.bind.TypeAdapters$27.read(TypeAdapters.java:661) ~[gson-2.8.9.jar:?]
        at com.google.gson.internal.bind.TypeAdapters$27.read(TypeAdapters.java:655) ~[gson-2.8.9.jar:?]
        at com.google.gson.internal.bind.TypeAdapters$33$1.read(TypeAdapters.java:866) ~[gson-2.8.9.jar:?]
        at net.minecraft.util.ChatDeserializer.a(SourceFile:503) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3447-Spigot-fb0dd5f-86292d3]
        ... 17 more

I think the code in CraftServer should either handle empty strings separatly or the default value should be set to "{}" instead of "".

[SPIGOT-6957] Bad default value for WorldCreator#generatorSettings Created: 03/Mar/22 Updated: 25/Dec/24 Resolved: 03/Mar/22
Status:	Resolved
Project:	Spigot
Component/s:	None
Affects Version/s:	None
Fix Version/s:	None

[SPIGOT-6957] Bad default value for WorldCreator#generatorSettings Created: 03/Mar/22 Updated: 25/Dec/24 Resolved: 03/Mar/22