Fix table misalignments and tweak webhook and githook lists (#21917)

- Fix regression from #21893 which had misaligned a few tables like repo
lists and e-mails
- Bring githooks list in line with webhooks list for styling
- Change webhook list icons to just colored dots, like githook list
- Increase size of dot in webhook and githook list from 16 to 22px

web_src/less/_repository.less

@@ -2612,12 +2612,18 @@
     }
   }
 
+  &.webhooks .list > .item:not(:first-child),
+  &.githooks .list > .item:not(:first-child) {
+    padding: .25rem 1rem;
+    margin: 12px -1rem -1rem;
+  }
+
   .list {
     > .item {
       &:not(:first-child) {
         border-top: 1px solid var(--color-secondary);
-        padding: .25rem 1rem;
-        margin: 12px -1rem -1rem;
+        padding: 1rem;
+        margin: 16px -1rem -1rem;
       }
 
       > .svg {