refactor(src/assets/icons/mic): simplify microphone SVG implementation

The SVG was streamlined by removing redundant CSS styles and simplifying path data, reducing file size and improving maintainability.

src/assets/icons/mic/microphone-0.svg

@@ -1,7 +1 @@
-<svg width="22" height="22" version="1.1" xmlns="http://www.w3.org/2000/svg">
- <defs>
-  <style id="current-color-scheme" type="text/css">.ColorScheme-Text { color:#f2f2f2; } .ColorScheme-Highlight { color:#4285f4; }</style>
- </defs>
- <path class="ColorScheme-Text" d="m11 3c-1.662 0-3 1.338-3 3v6.0021c0 1.662 1.338 3 3 3 1.662 0 3-1.338 3-3v-6.0021c0-1.662-1.338-3-3-3zm0 1c1.108 0 2 0.892 2 2v6.0021c0 1.108-0.892 2-2 2-1.108 0-2-0.892-2-2v-6.0021c0-1.108 0.892-2 2-2zm-4.5 6.0001v0.0019c-0.277 0-0.5 0.223-0.5 0.5v1.5c0 2.6 1.967 4.7246 4.5 4.9746v1.0234h-2c-0.66667 0-0.66667 1 0 1h5c0.66667 0 0.66667-1 0-1h-2v-1.0254c2.5575-0.25141 4.5054-2.4047 4.5-4.9745v-1.5c0-0.66667-1-0.66667-1 0v1.5c0 2.216-1.784 4-4 4-2.216 0-4-1.784-4-4v-1.5c0-0.277-0.223-0.5-0.5-0.5z" fill="currentColor" opacity=".35"/>
- <rect class="ColorScheme-Text" transform="rotate(45)" x="4.5563" y="-.5" width="22" height="1" rx=".5" ry=".5" fill="currentColor"/>
-</svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#fff" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-mic-off"><line x1="1" y1="1" x2="23" y2="23"></line><path d="M9 9v3a3 3 0 0 0 5.12 2.12M15 9.34V4a3 3 0 0 0-5.94-.6"></path><path d="M17 16.95A7 7 0 0 1 5 12v-2m14 0v2a7 7 0 0 1-.11 1.23"></path><line x1="12" y1="19" x2="12" y2="23"></line><line x1="8" y1="23" x2="16" y2="23"></line></svg>