fix: symbolic icon size

Normalizes symbolic icon sizes to 16x16 to match designs.

extra/scalable/apps/firmware-manager-symbolic.svg

@@ -1,4 +1,4 @@
-<svg width="16" height="17" viewBox="0 0 16 17" fill="none" xmlns="http://www.w3.org/2000/svg">
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
 <g clip-path="url(#clip0_1527_4627)">
 <path d="M0 0.0200195H16V16.02H0V0.0200195Z" fill="#808080" fill-opacity="0.00"/>
 <path d="M4 1.02002C3.446 1.02002 3 1.46602 3 2.02002V3.02002H1C0.446 3.02002 0 3.46602 0 4.02002V12.02C0 12.574 0.446 13.02 1 13.02H3V14.02C3 14.574 3.446 15.02 4 15.02C4.554 15.02 5 14.574 5 14.02V13.02H7V14.02C7 14.574 7.446 15.02 8 15.02C8.554 15.02 9 14.574 9 14.02V13.02H11V14.02C11 14.574 11.446 15.02 12 15.02C12.554 15.02 13 14.574 13 14.02V13.02H15C15.554 13.02 16 12.574 16 12.02V4.02002C16 3.46602 15.554 3.02002 15 3.02002H13V2.02002C13 1.46602 12.554 1.02002 12 1.02002C11.446 1.02002 11 1.46602 11 2.02002V3.02002H9V2.02002C9 1.46602 8.554 1.02002 8 1.02002C7.446 1.02002 7 1.46602 7 2.02002V3.02002H5V2.02002C5 1.46602 4.554 1.02002 4 1.02002ZM2 5.02002H14V6.02002C13.4696 6.02002 12.9609 6.23073 12.5858 6.60581C12.2107 6.98088 12 7.48959 12 8.02002C12 8.55045 12.2107 9.05916 12.5858 9.43423C12.9609 9.80931 13.4696 10.02 14 10.02V11.02H2V5.02002Z" fill="#232323"/>