Ensure scons source isn't obfuscated by liblouis test tables target

[LeonarddeR]

Link to issue number:

Fixes #16535 Fixup of #16208

Summary of the issue:

16208 introduced test tables SCons didn't want to copy to the test directory by default. I tried to fix that by binding testTable to the source target with env.Alias, but that's definitely the wrong way.

Description of user facing changes

Fixed build system.

Description of development approach

Added the test tables as a dependency to the liblouis python wrapper. This ensures that test tables will be there when the python wrapper is build.

Testing strategy:

Removed tests/unit/brailleTables and ensured they were copied properly.

Known issues with pull request:

None known

Code Review Checklist:

• [x] Documentation:
  • Change log entry
  • User Documentation
  • Developer / Technical Documentation
  • Context sensitive help for GUI changes
• [x] Testing:
  • Unit tests
  • System (end to end) tests
  • Manual testing
• [x] UX of all users considered:
  • Speech
  • Braille
  • Low Vision
  • Different web browsers
  • Localization in other languages / culture than English
• [x] API is compatible with existing add-ons.
• [x] Security precautions taken.

[LeonarddeR]

@hwf1324 could you please have a try?

[hwf1324]

Everything is normal now.