Add first-time user education hint about quote removal on Quote notifications (#35986)

app/javascript/styles/mastodon/components.scss

@@ -471,8 +471,8 @@
   }
 }
 
-body > [data-popper-placement] {
-  z-index: 3;
+[data-popper-placement] {
+  z-index: 9999;
 }
 
 .invisible {
@@ -7127,7 +7127,8 @@ a.status-card {
   cursor: default;
 }
 
-.media-gallery__alt__popover {
+.info-tooltip {
+  color: $white;
   background: color.change($black, $alpha: 0.65);
   backdrop-filter: $backdrop-blur-filter;
   border-radius: 4px;
@@ -7139,20 +7140,36 @@ a.status-card {
   max-height: 30em;
   overflow-y: auto;
 
+  &--solid {
+    color: var(--nested-card-text);
+    background:
+      /* This is a bit of a silly hack for layering two background colours
+       * since --nested-card-background is too transparent for a tooltip */
+      linear-gradient(
+        var(--nested-card-background),
+        var(--nested-card-background)
+      ),
+      linear-gradient(var(--background-color), var(--background-color));
+    border: var(--nested-card-border);
+  }
+
   h4 {
     font-size: 15px;
     line-height: 20px;
     font-weight: 500;
-    color: $white;
     margin-bottom: 8px;
   }
 
   p {
     font-size: 15px;
     line-height: 20px;
-    color: color.change($white, $alpha: 0.85);
+    opacity: 0.85;
     white-space: pre-line;
   }
+
+  .button {
+    margin-block-start: 8px;
+  }
 }
 
 .attachment-list {