Stop falling back sans-serif to SimSun and (P)MingLiu

[be5invis]

SimSun and PMingLiu are serif fonts, they should not be used as the fallback font for sans-serif families.

ref. https://www.zhihu.com/question/323244457/answer/675834621

[nornagon]

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[ShikiSuen]

Additionally, @be5invis works in Microsoft and is making efforts to improve the CJK font experience of Microsoft products. He surely knows that the CJK font fallback behavior of popular softwares on Microsoft Windows can directly affect the user experience of Microsoft products in Simplified Chinese / Traditional Chinese / Japanese / Korean languages.

Behaviors of misusing types of UI font for a language is making trouble to the users who use this language. Chromium currently does this stupidly by prioritizing PMingLiU & SimSun (serif Chinese fonts) above Micrsoft YaHei and JhengHei (sans-serif Chinese fonts) [1]. To be frank, using "sans-serif" is enough in current Windows 10 builds. Is Electron still gonna do the same stupid thing?

[1] See: https://cs.chromium.org/chromium/src/third_party/blink/renderer/platform/fonts/win/font_fallback_win.cc

  static const UChar* const kSimplifiedHanFonts[] = {L"simsun",
                                                     L"Microsoft YaHei", 0};
  static const UChar* const kTraditionalHanFonts[] = {L"pmingliu",
                                                      L"Microsoft JhengHei", 0};

[nornagon]

This issue was re-opened as #18197, please continue discussion there.