Resolve "Web IDE uncommitted files use wrong icon in tree"

What does this MR do?

This MR fixes two issues

1. Misalignment of icon in file tab

Before	After

2. Inconsistent icons in file tree and tab

Before	After

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry for user-facing changes, or community contribution. Check the link for other scenarios.
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Closes #61335 (closed)