fix(checkbox): disabled state tick color

Author: SisIvanova

src/components/checkbox/themes/shared/checkbox/checkbox.common.scss

@@ -29,4 +29,8 @@ $theme: $base;
     [part~='label'] {
         color: var-get($theme, 'disabled-color-label');
     }
+
+    [part~='indicator'] {
+        stroke: var-get($theme, 'disabled-tick-color');
+    }
 }

src/components/checkbox/themes/shared/checkbox/checkbox.indigo.scss

@@ -220,7 +220,8 @@ $error-color-hover: var-get($theme, 'error-color-hover');
     }
 
     [part~='indicator'] {
-        stroke-opacity: 0.4;
+        stroke: unset;
+        fill: var-get($theme, 'disabled-tick-color');
     }
 }
 
@@ -230,4 +231,12 @@ $error-color-hover: var-get($theme, 'error-color-hover');
         background: $disabled-indeterminate-color;
         border-color: transparent;
     }
+
+    [part~='indicator'] {
+        fill: none;
+
+        rect {
+            fill: var-get($theme, 'disabled-tick-color');
+        }
+    }
 }