feat(look&feel,apollo): set to ProgressBar a progress value border radius

Author: GuillaumeKESTEMAN

client/apollo/css/src/ProgressBar/ProgressBarCommon.css

@@ -15,12 +15,14 @@
 
   /* For WebKit browsers */
   &::-webkit-progress-value {
+    border-radius: var(--progress-bar-radius);
     background-color: var(--progress-bar-appearance);
     transition: width 0.75s ease;
   }
 
   /* For Firefox */
   &::-moz-progress-bar {
+    border-radius: var(--progress-bar-radius);
     background-color: var(--progress-bar-appearance);
 
     /* transition doesn't work in Firefox for native progress bars */