Docs: Detail 6.9.0 changes for esc_url_raw() and sanitize_url().

Duplicates the `@since 6.9.0` annotation on `esc_url()` to the two wrapper functions affected by the change.

Reviewed by desrosj.
Merges [61273] to the 6.9 branch.

Props peterwilsoncc, westonruter, wildworks.
Fixes #52886.

git-svn-id: https://develop.svn.wordpress.org/branches/6.9@61292 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

src/wp-includes/formatting.php

@@ -4594,6 +4594,8 @@ function esc_url( $url, $protocols = null, $_context = 'display' ) {
  *
  * @since 2.8.0
  * @since 6.1.0 Turned into an alias for sanitize_url().
+ * @since 6.9.0 Prepends `https://` to the URL if it does not already contain a scheme
+ *              and the first item in `$protocols` is 'https'.
  *
  * @see sanitize_url()
  *
@@ -4612,6 +4614,8 @@ function esc_url_raw( $url, $protocols = null ) {
  * @since 2.3.1
  * @since 2.8.0 Deprecated in favor of esc_url_raw().
  * @since 5.9.0 Restored (un-deprecated).
+ * @since 6.9.0 Prepends `https://` to the URL if it does not already contain a scheme
+ *              and the first item in `$protocols` is 'https'.
  *
  * @see esc_url()
  *