Workflow Instances page: filter select labels/icons overlap

On Elsa Studio Workflow Instances page, the filter controls in the table toolbar (especially Workflows, Status, and Sub status) render with overlapping label/icon text and inconsistent spacing. In some viewport sizes, controls become clipped or misaligned. This appears to be a frontend layout/styling issue in the toolbar controls, not a backend/API issue.

Steps to reproduce:

- Start Elsa.Studio.Host.Server.
- Open Workflow Instances.
- Observe the toolbar filters (Workflows, Status, Sub status) near action buttons.
- Resize viewport or use typical laptop width (e.g. ~1366px) to make the issue more visible.

Expected behavior:
- Filter controls are aligned on a single row (or wrap cleanly),
- no icon/label overlap,

Actual behavior:
- label/icon overlap and clipping inside select controls