In waterfall, add link to variable even when it has no direct parameters.

src/lib/components/WaterfallView.svelte

@@ -13,8 +13,6 @@
   import type { EditionMode } from "$lib/editions"
   import { entityByKey } from "$lib/entities"
   import type { Situation } from "$lib/situations"
-  import type { SelfTargetAProps } from "$lib/urls"
-  import { getVariableParametersName } from "$lib/variables"
 
   export let date: string
   export let decompositionByName: DecompositionByName
@@ -171,8 +169,8 @@
                         sveltekit:noscroll
                         >{decomposition.ux_name ?? decomposition.label}</a
                       >
-                    {:else if variable === undefined || getVariableParametersName(variable, date) === undefined}
-                      <!-- Trunk decomposition variable without parameters, in parameters mode => no link -->
+                    {:else if variable === undefined}
+                      <!-- Trunk decomposition without variable, in parameters mode => no link -->
                       <span>{decomposition.ux_name ?? decomposition.label}</span
                       >
                     {:else}
@@ -265,8 +263,8 @@
                       sveltekit:noscroll
                       >{decomposition.ux_name ?? decomposition.label}</a
                     >
-                  {:else if variable === undefined || getVariableParametersName(variable, date) === undefined}
-                    <!-- Leaf decomposition variable without parameters in parameters mode => no link -->
+                  {:else if variable === undefined}
+                    <!-- Leaf decomposition without variable, in parameters mode => no link -->
                     <span
                       class="hover:bg-white font-serif overflow-ellipsis overflow-x-hidden hover:overflow-x-visible text-base hover:z-20"
                       >{decomposition.ux_name ?? decomposition.label}</span