Left Panel: Fix scroll (#6921)

src/components/left/main/LeftMain.scss

@@ -36,11 +36,15 @@
 
     &-content {
       position: relative;
+
       display: flex;
       flex: 1;
       flex-direction: column;
 
+      min-height: 0;
+
       > .Transition {
+        overflow: hidden;
         flex: 1;
       }
 

src/components/right/AddChatMembers.scss

@@ -2,6 +2,7 @@
   position: relative;
   overflow: hidden;
   height: 100%;
+  background: var(--color-background);
 
   &-inner {
     overflow: hidden;

src/components/story/StoryRibbon.module.scss

@@ -4,6 +4,7 @@
 
   overflow-x: auto;
   display: flex;
+  flex-shrink: 0;
   column-gap: 0.625rem;
   justify-content: space-between;