fix: reduce symbolic icon background opacity to 0

Some icons had an opacity of 0.012.

extra/scalable/apps/weather-symbolic.svg

@@ -1,6 +1,6 @@
 <svg width="16" height="17" viewBox="0 0 16 17" fill="none" xmlns="http://www.w3.org/2000/svg">
 <g clip-path="url(#clip0_1527_4687)">
-<path d="M0 0.0568848H16V16.0569H0V0.0568848Z" fill="#808080" fill-opacity="0.012"/>
+<path d="M0 0.0568848H16V16.0569H0V0.0568848Z" fill="#808080" fill-opacity="0.00"/>
 <path d="M10 7.05688C9.20666 7.05704 8.43128 7.2931 7.77244 7.73505C7.11361 8.17701 6.60107 8.80489 6.3 9.53889C5.938 9.22835 5.47694 9.05741 5 9.05688C4.46957 9.05688 3.96086 9.2676 3.58579 9.64267C3.21071 10.0177 3 10.5265 3 11.0569C1.892 11.0569 1 11.9489 1 13.0569C1 14.1649 1.892 15.0569 3 15.0569H13C13.4407 15.0571 13.8692 14.9114 14.2184 14.6426C14.5677 14.3737 14.8182 13.9969 14.9307 13.5707C15.0433 13.1446 15.0117 12.6932 14.8408 12.2869C14.6699 11.8807 14.3693 11.5424 13.986 11.3249C13.9937 11.2357 13.9983 11.1463 14 11.0569C14 9.99602 13.5786 8.9786 12.8284 8.22846C12.0783 7.47831 11.0609 7.05688 10 7.05688Z" fill="#232323"/>
 <path d="M8 1.05688C6.4087 1.05688 4.88258 1.68903 3.75736 2.81424C2.63214 3.93946 2 5.46559 2 7.05688C2.002 7.94688 2.202 8.82689 2.586 9.63089C3.06 8.71988 3.903 8.05688 5 8.05688C5.36 8.05688 5.649 8.29688 5.98 8.41988C6.896 7.04488 8.309 6.05788 10 6.05688C11.598 6.05688 13.007 6.83088 13.918 8.00988C13.971 7.69488 13.998 7.37589 14 7.05688C14 5.46559 13.3679 3.93946 12.2426 2.81424C11.1174 1.68903 9.5913 1.05688 8 1.05688Z" fill="#232323"/>
 </g>