prevented overflow in expression

[JamalAlabdullah]

Description

• Updated css in LogicalExpressionEditor and StudioCodeFagment components to avoid overflow with a long text.

Related Issue(s)

• #12970

Verification

• [x] Your code builds clean without any errors or warnings
• [x] Manual testing done (required)
• [x] Relevant automated test added (if you find this hard, leave it and we'll help out)

Documentation

• [ ] User documentation is updated with a separate linked PR in altinn-studio-docs. (if applicable)