Fix usages of javax's Nullable annotation

Author: SquidDev

projects/common/src/main/java/dan200/computercraft/shared/media/MountMedia.java

@@ -14,8 +14,8 @@
 import net.minecraft.network.chat.Component;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.item.ItemStack;
+import org.jspecify.annotations.Nullable;
 
-import javax.annotation.Nullable;
 import java.util.function.Supplier;
 import java.util.function.ToIntFunction;
 

projects/common/src/main/java/dan200/computercraft/shared/media/items/TreasureDiskMedia.java

@@ -10,8 +10,8 @@
 import dan200.computercraft.core.filesystem.SubMount;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.item.ItemStack;
+import org.jspecify.annotations.Nullable;
 
-import javax.annotation.Nullable;
 import java.io.IOException;
 
 /**

projects/lints/src/main/kotlin/cc/tweaked/linter/ForbiddenImport.kt

@@ -38,7 +38,7 @@ class ForbiddenImport : BugChecker(), BugChecker.ImportTreeMatcher {
     companion object {
         private val ALTERNATIVE_IMPORTS = mapOf(
             // Ban JSR 305 and JetBrains @Nullable, and prefer the JSpecify one.
-            "org.javax.annotation.Nullable" to "org.jspecify.annotations.Nullable",
+            "javax.annotation.Nullable" to "org.jspecify.annotations.Nullable",
             "org.jetbrains.annotations.Nullable" to "org.jspecify.annotations.Nullable",
             // Prefer ErrorProne annotations over JSR ones.
             "javax.annotation.CheckReturnValue" to "com.google.errorprone.annotations.CheckReturnValue",