fix: resolve skills dropdown stacking issue

[tylrx404]

Description

This PR fixes the "Your Skills" autocomplete dropdown being rendered behind the predefined skill tags on the homepage form.

Root Cause

The autocomplete suggestions dropdown and the skill tags were being rendered in different stacking contexts, causing the dropdown to appear underneath the skill tags despite having its own z-index styling.

Changes Made

• Investigated the stacking-context hierarchy affecting the skills autocomplete component.
• Updated the relevant form container styling to ensure the dropdown renders above the skill tags.
• Preserved the existing layout, animations, and component behavior.
• Applied a minimal CSS-only fix without modifying application logic.

Testing

Steps Performed

1. Opened the homepage and navigated to the Your Skills section.

2. Typed skill prefixes such as:

   • Py
   • Ja
   • Re

3. Verified that:

   • Autocomplete suggestions appear above the skill tags.
   • Suggestions remain fully visible.
   • Suggestions are clickable and selectable.
   • Existing skill chips continue to render correctly.
   • No visual regressions were introduced in the form layout.

Before

The autocomplete dropdown was partially hidden behind the predefined skill tags, making suggestions difficult to read and interact with.

After

The autocomplete dropdown now correctly appears above the skill tags and remains fully accessible to users.

Screenshots

Issue

Closes #773

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