[BUG] Migrate to 4.5.2 fails when there is no CLI installed

[JoeFox82]

Discussed in #6338

When there is no CLI installed the migration to version 4.5.2 fails and the server doesn't start. I took a look in the logs and saw that there is an error in line 40 of class com.mirth.connect.server.migration.Migrate4_5_2.

ERROR 2024-10-01 10:16:15.335 [Main Server Thread] Server: Exception in thread "Main Server Thread" java.lang.NullPointerException: Cannot invoke "java.net.URI.isAbsolute()" because "uri" is null
ERROR 2024-10-01 10:16:15.343 [Main Server Thread] Server: at java.base/java.io.File.(File.java:417)
ERROR 2024-10-01 10:16:15.344 [Main Server Thread] Server: at com.mirth.connect.server.migration.Migrate4_5_2.migrateLog4jProperties(Migrate4_5_2.java:40)
ERROR 2024-10-01 10:16:15.344 [Main Server Thread] Server: at com.mirth.connect.server.migration.Migrate4_5_2.migrate(Migrate4_5_2.java:23)
ERROR 2024-10-01 10:16:15.344 [Main Server Thread] Server: at com.mirth.connect.server.migration.ServerMigrator.migrate(ServerMigrator.java:78)
ERROR 2024-10-01 10:16:15.344 [Main Server Thread] Server: at com.mirth.connect.server.controllers.DefaultMigrationController.migrate(DefaultMigrationController.java:96)
ERROR 2024-10-01 10:16:15.344 [Main Server Thread] Server: at com.mirth.connect.server.Mirth.startup(Mirth.java:319)
ERROR 2024-10-01 10:16:15.344 [Main Server Thread] Server: at com.mirth.connect.server.Mirth.run(Mirth.java:168)

I checked the code and it tells me:

builder = PropertiesConfigurationUtil.createBuilder(new File(ClassPathResource.getResourceURI("log4j2-cli.properties")));

Because there is no log4j2-cli.properties when the CLI is not installed the migration will always fail.