Log with lower severity when resources.json is not found

[paukert]

Export server version: v5.0.0
Highcharts version: 10.2.1

Configuration:

• CUSTOM_LOGIC_ALLOW_CODE_EXECUTION = true (code execution is allowed to support passing JS functions to formatters)
• --enableServer 1 (as was already mentioned in Docker file for V3 #451 (comment), setting env variable SERVER_ENABLE does not work and it has to be passed as parameter in ENTRYPOINT)

Current behaviour:
When code execution is allowed, the server assumes that there should be resources.json file and if there is none, it issues a warning.

Expected behaviour:
Server does not log message with warning severity.

Export server logs:

2025-04-05 14:52:14 Sat Apr 05 2025 12:52:14 GMT+0000 [warning] - [chart] Unable to load the default resources.json file.