Honor ConfigurationFactory active state

[DragonFSKY]

Fixes #3896.

This change makes ConfigurationFactory active-state handling consistent:

• Aggregate lookup skips inactive factories before querying their capabilities or creating configurations.
• Direct use of inactive JSON, YAML, and Log4j 1.x compatibility factories fails with IllegalStateException.
• Activation remains dynamic and honors overridden isActive() implementations.

Tests cover aggregate lookup paths, dynamic activation, overridden active state, and missing JSON/YAML dependencies. Existing Log4j 1.x configuration tests now explicitly enable compatibility mode where required, and the affected OSGi package versions reflect the new protected overrides.

Checklist

• Base your changes on 2.x branch if you are targeting Log4j 2; use main otherwise
• ./mvnw verify succeeds (the build instructions)
• Non-trivial changes contain an entry file in the src/changelog/.2.x.x directory
• Tests are provided

[ramanathan1504]

@DragonFSKY I've just taken a quick look at your PR and noticed there are multiple new test cases. Since it touches multiple files, please give us a little time. We will review it ASAP!