fix(css): inline css insert for single quote use strict

[underfin]

Description

I meet the error when enable the lib test at vite-plugin-vue. ref https://github.com/rolldown/vite-plugin-vue/actions/runs/12293389227/job/34305975962?pr=1

[plugin vite:esbuild-transpile] index.js.umd.cjs:1:16
Error: Transform failed with 1 error:
index.js.umd.cjs:1:16: ERROR: Expected ")" but found "__vite_style__"
Expected ")" but found "__vite_style__"
1  |  (function(glvar __vite_style__ = document.createElement('style');__vite_style__.textContent = ".card{padding:4rem}\n/*$vite$:1*/";document.head.appendChild(__vite_style__);obal, factory) {
   |                  ^
2  |    typeof exports === 'object' && typeof module !== 'undefined' ?  factory(exports) :
3  |    typeof define === 'function' && define.amd ? define([exports], factory) :

I debugger it and found the rolldown output doubleQuotesUseStruct at umd format, it make insert position error. Here i add a doubleQuotesUseStruct test and also preserve singleQuotesUseStruct to get more compatible, avoiding the rolldown of unintentional changes at future.

Here also add a specific error if not found insert position, it is more friendly to maintainer if something unexpected happened.