fix: ensure that meta containers are the same width

Fixes that some meta container might collapse if there are many labels.

Author: crisbeto

report-app/src/app/pages/report-list/report-list.scss

@@ -90,6 +90,7 @@ h1, h2 {
 
 .run-meta-container {
   width: 35%;
+  flex-shrink: 0;
 }
 
 .report-item-container {