LibWeb: Add HTMLToken(Type) constructor and use it

Author: https://github.com/MaxWipfli
Commit: 25cba4387b
Pull-request: https://github.com/SerenityOS/serenity/pull/8784
Reviewed-by: https://github.com/Hendiadyoin1
Reviewed-by: https://github.com/alimpfard

Userland/Libraries/LibWeb/HTML/Parser/HTMLTokenizer.cpp

@@ -2665,8 +2665,7 @@ bool HTMLTokenizer::consume_next_if_match(StringView const& string, CaseSensitiv
 
 void HTMLTokenizer::create_new_token(HTMLToken::Type type)
 {
-    m_current_token = {};
-    m_current_token.m_type = type;
+    m_current_token = { type };
     size_t offset = 0;
     switch (type) {
     case HTMLToken::Type::StartTag: