feat(enhanced): add comprehensive ProvideSharedPlugin test coverage

- Add 73 comprehensive tests for ProvideSharedPlugin core functionality
- Implement complete test coverage for shouldProvideSharedModule method (15 tests)
- Add provideSharedModule method tests with proper business logic validation (16 tests)
- Implement module matching and resolution stage tests (20 tests)
- Cover path classification, direct matching, prefix matching, layer logic
- Add node_modules reconstruction and early return scenario tests
- Fix container utils mock to support dependencyFactories operations
- Add ConsumeSharedPlugin error handling and performance tests
- Ensure all warning generation follows correct business rules:
  - include.request/exclude.request failures generate NO warnings
  - Only include.version/exclude.version failures generate warnings
  - Singleton warnings only for version filters
- Validate correct map key usage (createLookupKeyForSharing with resource path)
- Test complex filtering scenarios and edge cases comprehensively

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: ScriptedAlchemy

INCREMENTAL_PR_PLAN_REVISED.md

@@ -46,7 +46,13 @@ export const createMockCompilation = () => {
     runtimeTemplate: mockRuntimeTemplate,
     moduleGraph: mockModuleGraph,
     chunkGraph: mockChunkGraph,
-    dependencyFactories: new Map(),
+    dependencyFactories: {
+      set: jest.fn(),
+      get: jest.fn(),
+      has: jest.fn(),
+      delete: jest.fn(),
+      clear: jest.fn(),
+    },
     dependencyTemplates: new Map(),
     addRuntimeModule: jest.fn(),
     contextDependencies: { addAll: jest.fn() },