Cache API, Docs: Remove private delegation from cache priming functions.

Remove the private delegation from the following cache priming functions for various object types:

- `_prime_post_caches()`
- `_prime_term_caches()`
- `_prime_comment_caches()`
- `_prime_network_caches()`
- `_prime_site_caches()`
- `_get_non_cached_ids() `

Plugins and themes are now encouraged to use these functions to improve the performance of their code by reducing the number of database queries.

Props robinwpdeveloper, desrosj, SergeyBiryukov, mukesh27, costdev.
Fixes #56386.



git-svn-id: https://develop.svn.wordpress.org/trunk@53944 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/comment.php

@@ -3297,7 +3297,7 @@ function update_comment_cache( $comments, $update_meta_cache = true ) {
  * Adds any comments from the given IDs to the cache that do not already exist in cache.
  *
  * @since 4.4.0
- * @access private
+ * @since 6.1.0 This function is no longer marked as "private".
  *
  * @see update_comment_cache()
  * @global wpdb $wpdb WordPress database abstraction object.

src/wp-includes/functions.php

@@ -6988,7 +6988,7 @@ function wp_debug_backtrace_summary( $ignore_class = null, $skip_frames = 0, $pr
  * Retrieves IDs that are not already present in the cache.
  *
  * @since 3.4.0
- * @access private
+ * @since 6.1.0 This function is no longer marked as "private".
  *
  * @param int[]  $object_ids Array of IDs.
  * @param string $cache_key  The cache bucket to check against.

src/wp-includes/ms-network.php

@@ -122,7 +122,7 @@ function update_network_cache( $networks ) {
  * Adds any networks from the given IDs to the cache that do not already exist in cache.
  *
  * @since 4.6.0
- * @access private
+ * @since 6.1.0 This function is no longer marked as "private".
  *
  * @see update_network_cache()
  * @global wpdb $wpdb WordPress database abstraction object.

src/wp-includes/ms-site.php

@@ -339,7 +339,7 @@ function get_site( $site = null ) {
  *
  * @since 4.6.0
  * @since 5.1.0 Introduced the `$update_meta_cache` parameter.
- * @access private
+ * @since 6.1.0 This function is no longer marked as "private".
  *
  * @see update_site_cache()
  * @global wpdb $wpdb WordPress database abstraction object.

src/wp-includes/post.php

@@ -7905,7 +7905,7 @@ function _update_term_count_on_transition_post_status( $new_status, $old_status,
  * Adds any posts from the given IDs to the cache that do not already exist in cache.
  *
  * @since 3.4.0
- * @access private
+ * @since 6.1.0 This function is no longer marked as "private".
  *
  * @see update_post_caches()
  *

src/wp-includes/taxonomy.php

@@ -4005,7 +4005,7 @@ function _pad_term_counts( &$terms, $taxonomy ) {
  * Adds any terms from the given IDs to the cache that do not already exist in cache.
  *
  * @since 4.6.0
- * @access private
+ * @since 6.1.0 This function is no longer marked as "private".
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  *