Prevent method names from being emitted as global WP functions in since-data generation

[Copilot]

wp_functions_compatibility was flagging PHP serialize() as a WordPress function introduced in 6.7 because the generated wp-functions-since.json incorrectly included a class method (WP_HTML_Processor::serialize) as a global function. This change tightens dataset generation so only true global functions are emitted.

• Generator parsing fix

  • Updated tools/generate-wp-function-since-data.php brace/class-scope tracking to correctly stay inside class context even when token streams include curly-interpolation tokens.
  • Ensures class/trait/interface methods are excluded from function_since.

• Dataset correction

  • Ran the updated generator script and committed the newly generated includes/Vars/wp-functions-since.json.
  • This removes the incorrect "serialize": "6.7.0" entry and refreshes the full dataset based on the fixed generation logic (including metadata/version updates from the regenerated source).

• Regression coverage

  • Added a focused fixture plugin using PHP serialize() and a PHPUnit assertion in WP_Functions_Compatibility_Check_Tests confirming no wp_function_not_compatible_with_requires_wp error is reported for that usage.

$wpdb->update(
    $wpdb->options,
    [ 'option_value' => serialize( $items ) ],
    [ 'option_name' => 'cron' ]
);

> [!WARNING]
>
>

[ernilambar]

@copilot run the modified generator script for new json and include it in the same pull request.

[Copilot]

@copilot run the modified generator script for new json and include it in the same pull request.

Done in commit 039abdd. I ran the updated generator and committed the regenerated includes/Vars/wp-functions-since.json to this PR.

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Co-authored-by: ernilambar <nilambar@git.wordpress.org>
Co-authored-by: davidperezgar <davidperez@git.wordpress.org>
Co-authored-by: frantorres <frantorres@git.wordpress.org>

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