PSR1/SideEffects: improve recognition of disable/enable annotations

As it was, the sniff would respect PHPCS disable annotations, but only when either unqualified or qualified up to a sniff name.
It would not respect a disable annotation using a sniffname with errorcode, i.e. `PSR1.Files.SideEffects.FoundWithSymbols`.

While the `FoundWithSymbols` errorcode is the only error code for this sniff and using `// phpcs:disable PSR1.Files.SideEffects.FoundWithSymbols` is effectively the same as using `// phpcs:disable PSR1.Files.SideEffects`, I do believe end-users should not need to be aware of whether or not a sniff has multiple error codes when using disable annotations.

This updates the sniff to also respect disable annotations which include the error code.

Includes unit test.

Fixes 3386

Author: jrfnl

src/Standards/PSR1/Sniffs/Files/SideEffectsSniff.php

@@ -103,15 +103,17 @@ private function searchForConflict($phpcsFile, $start, $end, $tokens)
                 && (empty($tokens[$i]['sniffCodes']) === true
                 || isset($tokens[$i]['sniffCodes']['PSR1']) === true
                 || isset($tokens[$i]['sniffCodes']['PSR1.Files']) === true
-                || isset($tokens[$i]['sniffCodes']['PSR1.Files.SideEffects']) === true)
+                || isset($tokens[$i]['sniffCodes']['PSR1.Files.SideEffects']) === true
+                || isset($tokens[$i]['sniffCodes']['PSR1.Files.SideEffects.FoundWithSymbols']) === true)
             ) {
                 do {
                     $i = $phpcsFile->findNext(T_PHPCS_ENABLE, ($i + 1));
                 } while ($i !== false
                     && empty($tokens[$i]['sniffCodes']) === false
                     && isset($tokens[$i]['sniffCodes']['PSR1']) === false
                     && isset($tokens[$i]['sniffCodes']['PSR1.Files']) === false
-                    && isset($tokens[$i]['sniffCodes']['PSR1.Files.SideEffects']) === false);
+                    && isset($tokens[$i]['sniffCodes']['PSR1.Files.SideEffects']) === false
+                    && isset($tokens[$i]['sniffCodes']['PSR1.Files.SideEffects.FoundWithSymbols']) === false);
 
                 if ($i === false) {
                     // The entire rest of the file is disabled,

src/Standards/PSR1/Tests/Files/SideEffectsUnitTest.17.inc

@@ -0,0 +1,8 @@
+<?php
+// phpcs:disable PSR1.Files.SideEffects.FoundWithSymbols
+define("MAXSIZE", 100);
+// phpcs:enable
+$defined = true;
+if (defined('MINSIZE') === false) {
+    $defined = false;
+}