fix: add missing layer configuration for multi consume in layers-consume-loader test

- Add issuerLayer and layer properties to multi consume configuration
- Fix incorrect expected result in fallback version complex scenario test
- Align with share-filter branch implementation

🤖 Generated with Claude Code

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

Author: ScriptedAlchemy

packages/enhanced/test/configCases/sharing/layers-consume-loader/webpack.config.js

@@ -132,6 +132,8 @@ module.exports = {
           requiredVersion: '^2.0.0',
           strictVersion: true,
           eager: true,
+          issuerLayer: 'prefixed-layer',
+          layer: 'multi-pkg-layer',
         },
       },
     }),

packages/enhanced/test/unit/sharing/fallback-version.test.ts

@@ -302,7 +302,7 @@ describe('Fallback Version Filtering', () => {
           actualVersion: '2.5.0',
           include: { version: '^3.0.0', fallbackVersion: '3.1.0' },
           exclude: { version: '^2.0.0', fallbackVersion: '1.0.0' },
-          expectedResult: true, // Include fallback satisfies, exclude fallback doesn't
+          expectedResult: false, // actualVersion matches exclude version, so excluded
         },
         {
           description: