MARC Bib | Can't update invalid "07" position of "LDR" field

Overview: When "MARC Bibliographic" record has invalid value at "07" position of "LDR" field, the user can't save this record with updated "07" value.
Steps to Reproduce:

1. Log into MG Bugfest FOLIO environment as User with the following permissions:
   Data import: Can upload files, import, and view logs
   Inventory: All permissions
   quickMARC: View, edit MARC bibliographic record

2. Go to "Data import" app.

3. Import the attached ".mrc" file via "Data import" app using "Default - Create instance and SRS MARC Bib" job profile.

4. Once import is complete, click on the title at appeared row.

5. Click on the "Created" hyperlink at "instance" column to open the imported "Instance" record.

6. Click on the "Actions" >> "Edit MARC bibliographic record"

7. Edit "07" position of "LDR" field with valid value [for example: "i"]

8. Open "DevTools" (F12 button).

9. Click on the "Save & close" button.

Expected Results: The request was sent. The "MARC Bibliographic" record has been saved.
Actual Results: The request was not sent. The editing window of "MARC Bibliographic" record is being displayed.

Discussion for how to address this issue: Ignore stored 008 when Leader 07 value is invalid. 

• When user does not change the Leader 07 invalid value and makes edits/additions to the record and hits Save Then display the invalid Leader 07 position value (see requirement - https://folio-org.atlassian.net/browse/UIQM-234) 

• When user changes the Leader 07 invalid value to a valid value THEN display the default MARC 008 set of bytes AND when user hits Save Then the save should be successful and all updates including to Leader 07 and 008 should be saved. 

Additional Information: See attached screencast.
Also, user can't derive new "MARC Bibliographic" record from the record with invalid 07 position of LDR field.
URL: https://bugfest-mg.int.aws.folio.org/inventory/view/20c14229-5cc2-4217-872e-e19b8c770326 
Interested parties: