Fix handling TAG when is in composed statements

[GaetanoDiNatale]

Description

This work fixes the GOTO to a TAG declared under nested body. For example:

     C     FOO           IFEQ      BAR
     C     ... 
     C     JUMP          TAG
     C     ...
     C                   ENDIF     
     ...
     C                   GOTO      JUMP
     ...

Technical notes

In Jariko, that GOTO causes #Cannot invoke "String.length()" because "str" is null with a com.smeup.rpgparser.interpreter.GotoException. To achieve the purpose of this PR, I have made the change on internal_interpreter by making an explosion of statements for the individuation of desired TAG.

Related to #LS24004437

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.

[lanarimarco]

Ok