feat: remove optional dot for file description entry clauses

[ap891843]

as per the doc - https://www.ibm.com/docs/en/cobol-zos/6.4?topic=division-data-file-description-entries the file description entires can not have optional dots in between.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Following issue should be resolved
  

wrong code

       IDENTIFICATION DIVISION.
       PROGRAM-ID. test23.
       ENVIRONMENT DIVISION.
       CONFIGURATION SECTION.
       SPECIAL-NAMES.
       INPUT-OUTPUT SECTION.
       FILE-CONTROL.
           select CARD_ABC ASSIGN to abc.
       DATA DIVISION.
        FILE SECTION.
         FD CARD_ABC
           record contains 0 CHARACTERS.
           BLOCK CONTAINS 0 RECORDS
           LABEL RECORDS are OMITTED.
       01 CARD_ABC_FIELD.
           05 A-FIELD pic x(9).
        WORKING-STORAGE SECTION.
        LINKAGE SECTION.
       PROCEDURE DIVISION.

Checklist:

• Each of my commits contains one meaningful change
• I have performed rebase of my branch on top of the development
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have checked my code and corrected any misspellings

[ishche]

Could you please also update https://github.com/eclipse-che4z/che-che4z-lsp-for-cobol/blob/0094f340a262fcf1d4aaa53b88b205116e0ce12c/server/parser/src/main/antlr4/org/eclipse/lsp/cobol/core/parser/CobolDataDivisionParser.g4 this one