Improve Surge wp-config handling

[pfefferle]

Also check for WP_CACHE_CONFIG constent before fall back to regex.

Fix #1720

Proposed changes:

Other information:

• Have you written new tests for your changes, if applicable?

Testing instructions:

• Go to '..'

Changelog entry

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Changelog Entry Details

Significance

• Patch
• Minor
• Major

Type

• Added - for new features
• Changed - for changes in existing functionality
• Deprecated - for soon-to-be removed features
• Removed - for now removed features
• Fixed - for any bug fixes
• Security - in case of vulnerabilities

Message

Improved automated setup process for the Surge caching plugin.

[Copilot]

Pull Request Overview

This PR improves the handling of Surge wp-config by adding conditional checks for the WP_CACHE_CONFIG constant to avoid falling back to regex operations.

• In add_cache_config: Returns early if WP_CACHE_CONFIG is already defined.
• In remove_cache_config: Returns early if WP_CACHE_CONFIG is not defined.
• In tests: The test setup now defines WP_CACHE_CONFIG with a dummy value for proper simulation.

Reviewed Changes

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

File	Description
tests/integration/class-test-surge.php	Added a WP_CACHE_CONFIG definition for test consistency with a dummy value.
integration/class-surge.php	Added conditional early returns in add_cache_config and remove_cache_config methods.