Improve and fix bugs surrounding reactions (#24760)

- Slightly decrease size of reaction buttons
- Remove tooltip inside menu, it's obvious by the picture alone
- Fix top menu triangle
- Use `display: grid` to align icons in menu
- Use regular tooltip for reaction users
- Fix bug that deleted the reaction bar on clicking already reacted
reaction in dropdown

<img width="490" alt="Screenshot 2023-05-17 at 00 03 42"
src="https://github.com/go-gitea/gitea/assets/115237/61588b37-facb-4829-b75b-e1cb5dda8ca4">

<img width="67" alt="Screenshot 2023-05-17 at 00 11 14"
src="https://github.com/go-gitea/gitea/assets/115237/29605589-3b5f-40c6-8ad4-09923094bb8e">

<img width="211" alt="Screenshot 2023-05-17 at 00 29 30"
src="https://github.com/go-gitea/gitea/assets/115237/7d2725da-6a3d-4e42-a351-53647f79f762">
<img width="210" alt="Screenshot 2023-05-17 at 00 29 54"
src="https://github.com/go-gitea/gitea/assets/115237/b50f8364-033c-4445-ba25-61a814bb2d92">


<img width="892" alt="Screenshot 2023-05-17 at 00 12 20"
src="https://github.com/go-gitea/gitea/assets/115237/30a46424-406a-46e5-b4de-47172eb8679d">

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>

web_src/css/repo.css

@@ -1085,7 +1085,7 @@
 
 .repository.view.issue .comment-list .comment-code-cloud .segment.reactions .ui.label {
   border: 1px solid;
-  padding: 6px 10px !important;
+  padding: 5px 8px !important;
   margin: 0 2px;
   border-radius: var(--border-radius);
   border-color: var(--color-secondary-dark-1) !important;
@@ -1096,6 +1096,11 @@
   border-color: var(--color-primary-alpha-80) !important;
 }
 
+.repository.view.issue .comment-list .comment-code-cloud .segment.reactions .ui.label.basic.primary:hover {
+  background-color: var(--color-reaction-hover-bg) !important;
+  border-color: var(--color-primary-alpha-80) !important;
+}
+
 .repository.view.issue .comment-list .comment-code-cloud button.comment-form-reply {
   margin: 0;
 }
@@ -2133,7 +2138,7 @@
 .repository .select-reaction.dropdown .menu {
   right: 0 !important;
   left: auto !important;
-  min-width: 15em;
+  min-width: 170px;
 }
 
 .repository .segment.reactions.dropdown .menu > .header,
@@ -2144,25 +2149,15 @@
 .repository .segment.reactions.dropdown .menu > .item,
 .repository .select-reaction.dropdown .menu > .item {
   float: left;
-  padding: 0.25rem !important;
-  margin: 0.25rem;
-  font-size: 1.5em;
-  width: 39px;
-  left: 13px;
+  margin: 4px;
+  font-size: 20px;
+  width: 34px;
+  height: 34px;
+  min-height: 0 !important;
   border-radius: 6px;
-  display: flex;
-  justify-content: center;
+  display: flex !important;
   align-items: center;
-}
-
-.repository .segment.reactions.dropdown .menu > .item img.emoji,
-.repository .select-reaction.dropdown .menu > .item img.emoji {
-  margin-right: 0;
-}
-
-.repository .segment.reactions.dropdown .menu > .item:hover,
-.repository .select-reaction.dropdown .menu > .item:hover {
-  background: var(--color-primary);
+  justify-content: center;
 }
 
 .repository .segment.reactions {
@@ -2173,35 +2168,41 @@
   width: 100% !important;
   max-width: 100% !important;
   margin: 0 !important;
+  border-radius: 0 0 var(--border-radius) var(--border-radius);
 }
 
 .repository .segment.reactions .ui.label {
   max-height: 40px;
-  padding: 10px 18px !important;
+  padding: 8px 16px !important;
   display: flex !important;
   align-items: center;
   border: 0;
   border-right: 1px solid;
   border-radius: 0;
   margin: 0;
-  font-size: 14px;
+  font-size: 12px;
   font-weight: var(--font-weight-normal);
   border-color: var(--color-secondary) !important;
   background: var(--color-reaction-bg);
 }
 
+.repository .segment.reactions .ui.label:first-of-type {
+  border-bottom-left-radius: 3px;
+}
+
 .repository .segment.reactions .ui.label.disabled {
   cursor: default;
   opacity: 1;
 }
 
-.repository .segment.reactions .ui.label.basic {
+.repository .segment.reactions .ui.label.basic.primary {
   color: var(--color-primary) !important;
+  background-color: var(--color-reaction-active-bg) !important;
+  border-color: var(--color-secondary-dark-1) !important;
 }
 
-.repository .segment.reactions .ui.label.basic.primary {
-  background-color: var(--color-reaction-active-bg) !important;
-  border-color: var(--color-secondary) !important;
+.repository .segment.reactions .ui.label.basic:hover {
+  background-color: var(--color-reaction-hover-bg) !important;
 }
 
 .repository .segment.reactions .reaction-count {
@@ -2211,6 +2212,9 @@
 .repository .segment.reactions .select-reaction {
   display: flex;
   align-items: center;
+}
+
+.repository .segment.reactions .select-reaction a {
   padding: 0 14px;
 }
 
@@ -2469,7 +2473,7 @@
   padding: 0.5rem 1rem;
   margin: 0 !important;
   position: relative;
-  color: var(--color-text-light-2);
+  color: var(--color-text);
   min-height: 41px;
   background-color: var(--color-box-header);
   display: flex;
@@ -2516,14 +2520,6 @@
   left: 7px;
 }
 
-.comment-header a {
-  color: var(--color-text);
-}
-
-.comment-header a:hover {
-  color: var(--color-primary);
-}
-
 .comment-header .actions a {
   margin-right: 0 !important;
   padding: 0.5rem !important;
@@ -2534,6 +2530,11 @@
   margin-left: 0.25rem;
 }
 
+.content-history-menu .octicon-triangle-down {
+  position: relative;
+  top: 1.5px;
+}
+
 .comment-body {
   background: var(--color-box-body);
   border: none !important;