Generic/DocComment: bug fix - don't remove ignore annotations when fixing

The code sample included in the tests would previously result in an "There must be a single blank line after a tag group" error, even though there _is_ a blank line after the `@codeCoverageIgnore` tag.

The auto-fixer would subsequently fix this by removing the `@phpcs:disable` comment + the blank line after it.

Fixed now.

Includes test.

Author: jrfnl

src/Standards/Generic/Sniffs/Commenting/DocCommentSniff.php

@@ -11,6 +11,7 @@
 
 use PHP_CodeSniffer\Files\File;
 use PHP_CodeSniffer\Sniffs\Sniff;
+use PHP_CodeSniffer\Util\Tokens;
 
 class DocCommentSniff implements Sniff
 {
@@ -280,9 +281,12 @@ public function process(File $phpcsFile, $stackPtr)
             }
 
             // Check that there was single blank line after the tag block
-            // but account for a multi-line tag comments.
+            // but account for multi-line tag comments.
+            $find = Tokens::$phpcsCommentTokens;
+            $find[T_DOC_COMMENT_TAG] = T_DOC_COMMENT_TAG;
+
             $lastTag = $group[$pos];
-            $next    = $phpcsFile->findNext(T_DOC_COMMENT_TAG, ($lastTag + 3), $commentEnd);
+            $next    = $phpcsFile->findNext($find, ($lastTag + 3), $commentEnd);
             if ($next !== false) {
                 $prev = $phpcsFile->findPrevious([T_DOC_COMMENT_TAG, T_DOC_COMMENT_STRING], ($next - 1), $commentStart);
                 if ($tokens[$next]['line'] !== ($tokens[$prev]['line'] + 2)) {

src/Standards/Generic/Tests/Commenting/DocCommentUnitTest.inc

@@ -249,4 +249,14 @@
  * @link		http://pear.php.net/package/PHP_CodeSniffer
  */
 
+/**
+ * Do something.
+ *
+ * @codeCoverageIgnore
+ *
+ * @phpcs:disable Stnd.Cat.SniffName
+ *
+ * @return void
+ */
+
 /** No docblock close tag. Must be last test without new line.

src/Standards/Generic/Tests/Commenting/DocCommentUnitTest.inc.fixed

@@ -254,4 +254,14 @@
  * @link      http://pear.php.net/package/PHP_CodeSniffer
  */
 
+/**
+ * Do something.
+ *
+ * @codeCoverageIgnore
+ *
+ * @phpcs:disable Stnd.Cat.SniffName
+ *
+ * @return void
+ */
+
 /** No docblock close tag. Must be last test without new line.