[DOC] PDF build has missing Unicode characters

Bug report

Bug description:

When compiling locally the PDFs (see https://github.com/python/docsbuild-scripts/issues/187#issuecomment-2373608230) for documentation a number of missing characters are reported.

howto-unicode.log:Missing character: There is no ♞ (U+265E) in font [FreeMono.otf]/OT:script=latn
howto-unicode.log:Missing character: There is no ♟ (U+265F) in font [FreeMono.otf]/OT:script=latn
howto-unicode.log:Missing character: There is no 😀 (U+1F600) in font [FreeMono.otf]/OT:script=lat
howto-unicode.log:Missing character: There is no 😉 (U+1F609) in font [FreeMono.otf]/OT:script=lat
library.log:Missing character: There is no ٤ (U+0664) in font [FreeMonoOblique.otf]/OT:scri
library.log:Missing character: There is no ௪ (U+0BEA) in font [FreeMonoOblique.otf]/OT:scri
library.log:Missing character: There is no ౪ (U+0C6A) in font [FreeMonoOblique.otf]/OT:scri
library.log:Missing character: There is no ໔ (U+0ED4) in font [FreeMonoOblique.otf]/OT:scri
tutorial.log:Missing character: There is no 景 (U+666F) in font [FreeMono.otf]/OT:script=latn
tutorial.log:Missing character: There is no 太 (U+592A) in font [FreeMono.otf]/OT:script=latn
tutorial.log:Missing character: There is no 郎 (U+90CE) in font [FreeMono.otf]/OT:script=latn

This means that the respective PDFs are missing the glyphs. The build was done using the French locale, but a previous build in English of the sole library.pdf reported a number of those already (those lines above from library.log).

CPython versions tested on:

3.13

Operating systems tested on:

macOS

首先在法语和英语 locale 中重现 PDF 构建，并检查 howto-unicode.log、library.log 和 tutorial.log 中报告的缺失字形。完成的标准是受影响的 PDF 包含这些字符，并且构建不再报告相应的缺失字符消息。