Develop before revert/LS25000520/Fix concurrence between DS and File

[davidepalladino-apuliasoft]

Description

This work is related to #696 . In addition:

• removeFileFieldsDefinedInDs has been removed because there is a new logic made from Bugfix/LS25000430/Concurrence between API definitions and fields of unnamed DS #700 with removeStandaloneDefinedAsFieldOfUnqualifiedDs;
• a new test has been added where the file in EXTNAME is different from F spec but shares same fields.

Related to #LS25000520

Checklist:

• If this feature involves RPGLE fixes or improvements, they are well-described in the summary.
• There are tests for this feature.
• RPGLE code used for tests is easily understandable and includes comments that clarify the purpose of this feature.
• The code follows Kotlin conventions (run ./gradlew ktlintCheck).
• The code passes all tests (run ./gradlew check).
• Relevant documentation is included in the docs directory.