Fix Issue & Pull Request comment headers on mobile (#13039)

Signed-off-by: kolaente <k@knt.li>

web_src/less/_repository.less

@@ -996,11 +996,9 @@
             position: relative;
             color: #767676;
             background-color: #f7f7f7;
-
-            .text {
-              padding-top: 10px;
-              padding-bottom: 10px;
-            }
+            display: flex;
+            justify-content: space-between;
+            align-items: center;
 
             &.arrow-top::before,
             &.arrow-top::after {
@@ -1017,7 +1015,11 @@
               left: 7px;
             }
 
-            .actions a {
+            .actions {
+              display: flex;
+              padding: 0 .5rem;
+
+              a {
                 color: rgba(0, 0, 0, .4);
 
                 &:hover {
@@ -1025,6 +1027,7 @@
                 }
               }
             }
+          }
 
           > .merge-section {
             background-color: #f7f7f7;