Remove unnecessary flex box to make EE banner visible again. Cleanup class names a bit

frontend/src/app/features/work-packages/components/wp-baseline/baseline/baseline.component.html

@@ -1,5 +1,5 @@
 <div class="op-baseline--header"
-     [class.op-baseline_banner_active]="!available"
+     [class.op-baseline--header_banner-active]="!available"
      [class.op-baseline_tab]="!showActionBar">
 
   <op-enterprise-banner-frame

frontend/src/app/features/work-packages/components/wp-baseline/baseline/baseline.component.sass

@@ -2,14 +2,13 @@
 
 .op-baseline
   &--header
-    display: flex
-    justify-content: space-between
-    align-items: flex-start
-    flex-direction: column
     width: 280px
     margin: $spot-spacing-1 $spot-spacing-1 0 $spot-spacing-1
     color: var(--fgColor-muted)
 
+    &_banner-active
+      width: 450px
+
     &:has(+ .op-baseline--body_ranged)
       width: auto
 
@@ -75,6 +74,3 @@
       margin-left: 0
     .op-baseline--range-container
       margin: 0
-
-  &_banner_active.op-baseline--header
-    width: 450px