[clang-format] Fix parsing lambdas with noexcept

[MyDeveloperDay]

This was addressed with D56909: [clang-format] Fix line parsing for noexcept lambdas can we please abandon

lib/Format/UnwrappedLineParser.cpp

while (FormatTok->isNot(tok::l_brace)) {
     case tok::l_brace:
       break;
     case tok::l_paren:
       parseParens();
       break;
     case tok::amp:
     case tok::star:
     case tok::kw_const:
+    case tok::kw_noexcept:
     case tok::comma:
     case tok::less:
     case tok::greater:
     case tok::identifier:
     case tok::numeric_constant:
     case tok::coloncolon:
     case tok::kw_mutable:
       nextToken();

unittests/Format/FormatTest.cpp

TEST_F(FormatTest, FormatsLambdas) {
   verifyFormat("auto lambda = []() {\n"
                "  int a = 2\n"
                "#if A\n"
                "          + 2\n"
                "#endif\n"
                "      ;\n"
                "};");
 
+  verifyFormat("if (a && []() noexcept {\n"
+               "      doo_dah();\n"
+               "      doo_dah();\n"
+               "    }()) {\n"
+               "}");
+
   // Lambdas with complex multiline introducers.
   verifyFormat(
       "aaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
       "    [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]()\n"
       "        -> ::std::unordered_set<\n"
       "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {\n"
       "      //\n"
       "    });");