Fix discard button not showing up in Web IDE

What does this MR do?

This MR fixes a bug in the IDE where the discard button was not showing for certain changes.

Screenshots

Before	After (in this MR)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.

References

• Related to #213238 (closed)