Add support for `INSERT INTO ... VALUES ...` syntax in SQL queries

Bug Description

Prepared SQL queries with INSERT INTO ... VALUES ... filled with the correct number of placeholders using the syntax commonly used for queries with IN(...) clauses (implode() + array_fill()) emit a warning.

Minimal Code Snippet

The issue happens when running this command:

phpcs --standard=WordPress -s testfile.php

... over a file containing this code:

$all_relationships = array(
	array( 1, 1 ),
	array( 1, 2 ),
	array( 1, 3 ),
);
$wpdb->query(
	$wpdb->prepare(
		sprintf(
			"INSERT INTO {$wpdb->term_relationships} (object_id, term_taxonomy_id) VALUES %s",
			implode( ',', array_fill( 0, count( $all_relationships ), '(%d,%d)' ) )
		),
		array_merge( ...$all_relationships )
	)
);

Error Code

Incorrect number of replacements passed to $wpdb->prepare().
Found 1 replacement parameters, expected 0.
(WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber)

Environment

Additional Context (optional)

Tested Against develop Branch?

• I have verified the issue still exists in the develop branch of WordPressCS.

Start by running phpcs --standard=WordPress -s testfile.php against the provided PHP snippet and trace WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber. Investigate how the INSERT INTO ... VALUES ... query is interpreted, then verify that the command accepts the example without the incorrect replacement-count warning.