Fix Global Styles Block Icon Color for Mini Cart (#7762)

* Update hex color val to currentColor.

* Remove fill attributes on SVG

Having the fill attributes explicitly defined on the SVG was setting the
icon to purple in unexpected cases.

This also reverts the quick attempt to adjust CSS selector for a fix, as
it was the incorrect approach.

assets/js/icons/library/mini-cart-alt.tsx

@@ -4,7 +4,7 @@
 import { SVG } from '@wordpress/primitives';
 
 const miniCartAlt = (
-	<SVG xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none">
+	<SVG xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
 		<defs>
 			<mask
 				id="mask"
@@ -27,12 +27,9 @@ const miniCartAlt = (
 			</mask>
 		</defs>
 		<g mask="url(#mask)">
-			<path
-				d="M2,4H0V6H2ZM2,2V0H0V2ZM4,4l1.8-.9L5.3,2H4Zm3.6,7.6,1.7,1,.5-.9-.4-1ZM6.3,14l-1.8-.9h0ZM20,17v2h2V17Zm0-2h2V13H20ZM8,15,6.2,14,4.6,17H8Zm1.1-2V11H7.9l-.6,1Zm9.2-1-1.8-1h0Zm3.6-6.5-1.8-1h0ZM6.2,4l-1.8.9L4.9,6H6.2ZM5.3,2l1.8-.9L6.5,0H5.3ZM4,4V2H0V4ZM4,2H2V6H4Zm5.4,8.7L5.8,3.1,2.2,4.9l3.6,7.5ZM8,15l1.3-2.4-3.5-2L4.5,13.1Zm0,0H8L4.5,13.1A4,4,0,0,0,8,19Zm12,0H8v4H20Zm-2,0v2h4V15ZM8,17H20V13H8Zm-.7-5L6.2,14l3.6,2,1.1-2Zm9.3-1H9.1v4h7.5Zm-.1,0h.1v4a4,4,0,0,0,3.5-2.1Zm3.6-6.5L16.5,11l3.6,1.9,3.5-6.5ZM21,6a1,1,0,0,1-.9-1.5l3.5,2A3,3,0,0,0,21,2ZM6.2,6H21V2H6.2ZM3.5,2.9l.9,2L8,3.1l-.9-2ZM2,4H5.3V0H2ZM8,20H8V16a4,4,0,0,0-4,4Zm0,0H4a4,4,0,0,0,4,4Zm0,0v4a4,4,0,0,0,4-4Zm0,0h4a4,4,0,0,0-4-4Zm10-4a4,4,0,0,0-4,4h4Zm4,4a4,4,0,0,0-4-4v4Zm-4,4a4,4,0,0,0,4-4H18Zm-4-4a4,4,0,0,0,4,4V20H14Z"
-				fill="#7f54b3"
-			/>
+			<path d="M2,4H0V6H2ZM2,2V0H0V2ZM4,4l1.8-.9L5.3,2H4Zm3.6,7.6,1.7,1,.5-.9-.4-1ZM6.3,14l-1.8-.9h0ZM20,17v2h2V17Zm0-2h2V13H20ZM8,15,6.2,14,4.6,17H8Zm1.1-2V11H7.9l-.6,1Zm9.2-1-1.8-1h0Zm3.6-6.5-1.8-1h0ZM6.2,4l-1.8.9L4.9,6H6.2ZM5.3,2l1.8-.9L6.5,0H5.3ZM4,4V2H0V4ZM4,2H2V6H4Zm5.4,8.7L5.8,3.1,2.2,4.9l3.6,7.5ZM8,15l1.3-2.4-3.5-2L4.5,13.1Zm0,0H8L4.5,13.1A4,4,0,0,0,8,19Zm12,0H8v4H20Zm-2,0v2h4V15ZM8,17H20V13H8Zm-.7-5L6.2,14l3.6,2,1.1-2Zm9.3-1H9.1v4h7.5Zm-.1,0h.1v4a4,4,0,0,0,3.5-2.1Zm3.6-6.5L16.5,11l3.6,1.9,3.5-6.5ZM21,6a1,1,0,0,1-.9-1.5l3.5,2A3,3,0,0,0,21,2ZM6.2,6H21V2H6.2ZM3.5,2.9l.9,2L8,3.1l-.9-2ZM2,4H5.3V0H2ZM8,20H8V16a4,4,0,0,0-4,4Zm0,0H4a4,4,0,0,0,4,4Zm0,0v4a4,4,0,0,0,4-4Zm0,0h4a4,4,0,0,0-4-4Zm10-4a4,4,0,0,0-4,4h4Zm4,4a4,4,0,0,0-4-4v4Zm-4,4a4,4,0,0,0,4-4H18Zm-4-4a4,4,0,0,0,4,4V20H14Z" />
 		</g>
-		<circle cx="20.2" cy="4.7" r="3.8" fill="#7f54b3" />
+		<circle cx="20.2" cy="4.7" r="3.8" />
 	</SVG>
 );