Don't consume character after , without checking

Also remove fix for `consumeUntil` bug, which #1320 will address.

Author: JakeQZ

src/Parsing/ParserState.php

@@ -345,10 +345,6 @@ public function consumeUntil(
         $start = $this->currentPosition;
 
         while (!$this->isEnd()) {
-            $comment = $this->consumeComment();
-            if ($comment instanceof Comment) {
-                $comments[] = $comment;
-            }
             $character = $this->consume(1);
             if (\in_array($character, $stopCharacters, true)) {
                 if ($includeEnd) {

src/RuleSet/DeclarationBlock.php

@@ -44,10 +44,19 @@ public static function parse(ParserState $parserState, ?CSSList $list = null): ?
             $selectorParts = [];
             $stringWrapperCharacter = null;
             $functionNestingLevel = 0;
+            $consumedNextCharacter = false;
             do {
-                $selectorParts[] = $parserState->consume(1)
-                    . $parserState->consumeUntil(['{', '}', '\'', '"', '(', ')', ','], false, false, $comments);
+                if (!$consumedNextCharacter) {
+                    $selectorParts[] = $parserState->consume(1);
+                }
+                $selectorParts[] = $parserState->consumeUntil(
+                    ['{', '}', '\'', '"', '(', ')', ','],
+                    false,
+                    false,
+                    $comments
+                );
                 $nextCharacter = $parserState->peek();
+                $consumedNextCharacter = false;
                 switch ($nextCharacter) {
                     case '\'':
                         // The fallthrough is intentional.
@@ -78,6 +87,7 @@ public static function parse(ParserState $parserState, ?CSSList $list = null): ?
                             $selectors[] = \implode('', $selectorParts);
                             $selectorParts = [];
                             $parserState->consume(1);
+                            $consumedNextCharacter = true;
                         }
                         break;
                 }