Replace internal REFERENCE_NAME_SATISFYING_CONDITION with OSGi spec constant

[Copilot]

Addresses apache#452 (comment)

The internal constant ReferenceMetadata.REFERENCE_NAME_SATISFYING_CONDITION was a temporary placeholder meant to be replaced with the official OSGi R8 spec constant once available.

Changes

• Removed internal constant definition and javadoc from ReferenceMetadata
• Replaced all usages with ComponentConstants.REFERENCE_NAME_SATISFYING_CONDITION from org.osgi.service.component (version 1.5.0, already a dependency)
• Updated imports in:
  • XmlHandler.java (3 usages)
  • DependencyManager.java (1 usage)
  • SatisfyingConditionComponentClass.java (1 test usage)

Net change: -5 lines across 4 files.

Original prompt

Please resolve comment from user on this PR apache#452 (comment)

we should remove the internal constant and javadoc and replace it with the official one referenced in the comment:

The point of this comment wasn't to add javadoc later to this internal class. It was to remind us to use the actual spec'ed constant from the released APIs
https://github.com/osgi/osgi/blob/eb08fcac898f50aec1a1d2847cae6ffccd5a7385/org.osgi.service.component/src/org/osgi/service/component/ComponentConstants.java#L161

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