bug: ExprJoinedStr and ExprTemplateStr don't always produce correct code

[pawamoy]

Description of the bug

These two classes produce code by hardcoding single quotes at the beginning and end of the strings. This can produce invalid code if the string contains additional single quotes.

To Reproduce

TODO

Full traceback

/

Expected behavior

We should produce valid code, always.

Environment information

griffe --debug-info  # | xclip -selection clipboard

• System: Linux-6.18.7-arch1-1-x86_64-with-glibc2.42
• Python: cpython 3.14.2 (/run/media/pawamoy/Data/dev/griffe/.venv/bin/python3)
• Environment variables:
• Installed packages:
  • griffelib v1.15.1.dev12+g162c31c2
  • griffecli v1.15.1.dev12+g162c31c2
  • griffe v1.15.1.dev12+g162c31c2

Additional context

Spotted in #440