fix(ui): commit hashes in the activity feed are misaligned (#39883)

Fixes #38646

### The problem

Each commit line of a push in the activity feed starts with the avatar
stack of its co-authors. The width of that stack grows with the number
of co-authors, so the hash of every commit started at a different
horizontal offset and the column looked ragged.

---------

Signed-off-by: Josway <jxh98@foxmail.com>
Co-authored-by: silverwind <me@silverwind.io>

templates/user/dashboard/feeds.tmpl

@@ -92,10 +92,10 @@
 							{{$commitLink := printf "%s/commit/%s" $repoLink $pushCommit.Sha1}}
 							<div class="flex-text-block">
 								{{ctx.RenderUtils.AvatarStackPushCommit $pushCommit}}
-								<a class="ui sha label" href="{{$commitLink}}">{{ShortSha $pushCommit.Sha1}}</a>
-								<span class="tw-inline-block tw-truncate">
+								<span class="tw-flex-1 gt-ellipsis">
 									{{ctx.RenderUtils.RenderCommitMessage $pushCommit.Message $repo}}
 								</span>
+								<a class="ui sha label" href="{{$commitLink}}">{{ShortSha $pushCommit.Sha1}}</a>
 							</div>
 						{{end}}
 					</div>