Fix field names in Isabelle translation

[unp1]

Updates the Isabelle translation to the new field name and observer symbol name conventions

Intended Change

The Isabelle translation should be able to recognize fields and observer symbols

Type of pull request

• Bug fix (non-breaking change which fixes an issue)

Ensuring quality

• I have tested the feature as follows: automatic tests should run through again

The contributions within this pull request are licensed under GPLv2 (only) for inclusion in KeY.

[unp1]

The failing test is just because of maven not being able to access the javaparser repo.

[WolframPfeifer]

Thanks! I didn't remember that we should have adapted this after changing the name prefixes for fields. I think, we don't have any test for the Isabelle translation at the moment (because that would require running Isabelle), right?

Maybe it is a good idea to use Patter.quote() instead of the manual escaping with backslashes? However, I approved the PR and leave that decision to you.

[unp1]

Thanks! I didn't remember that we should have adapted this after changing the name prefixes for fields. I think, we don't have any test for the Isabelle translation at the moment (because that would require running Isabelle), right?

As far as I know we do not have some.

Maybe it is a good idea to use Patter.quote() instead of the manual escaping with backslashes? However, I approved the PR and leave that decision to you.

Thanks! It makes now use of Pattern.quote(). I did not know about that one.