`wp_start_template_enhancement_output_buffer ` Fatal Error on BP > 14.5.0 with WP < 6.9

[samedwards]

As part of #9309, wp_start_template_enhancement_output_buffer was hooked to bp_core_pre_load_template, but wp_start_template_enhancement_output_buffer was only added in WP 6.9, and the hook is added unconditionally, so for any WP version missing this function, a fatal error is thrown

Uncaught Error: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "wp_start_template_enhancement_output_buffer" not found or invalid function name in [...]/wp-includes/class-wp-hook.php on line 324

For now I'm working around this by providing a dummy function wrapped in a function_exists check in an mu-plugin

[espellcaste]

Ah, my mistake. I can fix it.