refactor(opcuaserver): rename Phase7* address-space pipeline to AddressSpace*

The OPC UA address-space build pipeline was named after a v2-roadmap
milestone number rather than its domain. Rename the family to describe
what it does (build/diff/apply the OPC UA address space):

  Phase7Composer          -> AddressSpaceComposer
  Phase7CompositionResult -> AddressSpaceComposition
  Phase7Planner           -> AddressSpacePlanner
  Phase7Plan              -> AddressSpacePlan
  Phase7Applier           -> AddressSpaceApplier
  Phase7ApplyOutcome      -> AddressSpaceApplyOutcome

The 9 Phase7*Tests suites follow suit; Phase7ScriptingEntitiesTests ->
ScriptingEntitiesTests (it tests the scripting migration, not the
pipeline). Log-message prefixes move to the new class names.

Pure mechanical rename, no behavioral change. EF migration classes/IDs
(AddPhase7ScriptingTables, ExtendComputeGenerationDiffWithPhase7) are
immutable and left untouched, as are historical design docs.

Build clean; OpcUaServer 261/261, Runtime 272/272, ScriptingEntities
12/12 green.

src/Core/ZB.MOM.WW.OtOpcUa.Commons/OpcUa/EquipmentNodeIds.cs

@@ -4,7 +4,7 @@ namespace ZB.MOM.WW.OtOpcUa.Commons.OpcUa;
 ///     Single source of truth for equipment-namespace OPC UA NodeId strings. The variable NodeId is
 ///     FOLDER-SCOPED (<c>{parent}/{Name}</c>), NOT the driver-side FullName — a driver wire ref is not
 ///     unique across identical machines, so FullName-as-NodeId would collide in the sink. Used by the
-///     materialiser (Phase7Applier), the VirtualTag publish map, and the driver live-value router so all
+///     materialiser (AddressSpaceApplier), the VirtualTag publish map, and the driver live-value router so all
 ///     three agree on the exact NodeId a variable was placed at.
 /// </summary>
 public static class EquipmentNodeIds