fix: plantage quand un paramètre n'a pas d'inflateur

src/lib/components/legislation_view/parameters/VariableReferredScaleParameter.svelte

@@ -260,11 +260,11 @@
                   ...reformParameters.children?.[
                     (reformName === billName
                       ? billInflatorPath
-                      : revaluationInflatorPath)![0]
+                      : revaluationInflatorPath)?.[0] ?? ""
                   ]?.children[
                     (reformName === billName
                       ? billInflatorPath
-                      : revaluationInflatorPath)![1]
+                      : revaluationInflatorPath)?.[1] ?? ""
                   ],
                   ...{
                     revaluation_inflator_reference: (reformName === billName

src/lib/components/legislation_view/parameters/VariableReferredValueParameter.svelte

@@ -253,11 +253,11 @@
                   ...reformParameters.children?.[
                     (reformName === billName
                       ? billInflatorPath
-                      : revaluationInflatorPath)![0]
+                      : revaluationInflatorPath)?.[0] ?? ""
                   ]?.children[
                     (reformName === billName
                       ? billInflatorPath
-                      : revaluationInflatorPath)![1]
+                      : revaluationInflatorPath)?.[1] ?? ""
                   ],
                   ...{
                     revaluation_inflator_reference: (reformName === billName