fix(tests): preventing test failure slip-througs to main

[mfranzke]

Proposed changes

The checks for a PR run through smoothly, but it's results would lead to a fail on main branch. We need to prevent this to happen. This is related to the optimizations that we made with PR #4452

Types of changes

• Bugfix (non-breaking change that fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (improvements to existing components or architectural decisions)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Further comments

[changeset-bot]

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Latest commit: 81221eb

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[github-actions]

🔭🐙🐈 Test this branch here: https://db-ux-design-system.github.io/core-web/review/fix-tests-preventing-test-failure-slipthrougs-to-main

[Copilot]

Pull Request Overview

This PR addresses test failures that were passing in PR checks but failing on the main branch due to inconsistent test conditions between PR and main branch workflows. The changes fix select component value handling and temporarily disable conditional test execution to prevent false positives.

Key changes:

• Fixed select component value handling by removing fallback empty string assignments
• Temporarily disabled conditional test execution that was causing inconsistent results between PR and main branch

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
showcases/angular-showcase/src/app/components/select/select.component.html	Removed fallback empty string for select value binding
packages/components/src/components/select/select.lite.tsx	Removed selected attribute logic from placeholder option
packages/components/scripts/post-build/components.ts	Added null coalescing operator for value handling in Angular implementation
.github/workflows/02-e2e-showcases.yml	Commented out conditional test execution to ensure consistent test runs