15685 Allow decimal for cable length filter form (#15703)

* 15685 allow decimal for cable length filter

* 15685 allow decimal for cable length filter

* 15685 remove minlenth

* 15685 remove minlenth

netbox/dcim/forms/filtersets.py

@@ -977,9 +977,9 @@ class CableFilterForm(TenancyFilterForm, NetBoxModelFilterSetForm):
         label=_('Color'),
         required=False
     )
-    length = forms.IntegerField(
+    length = forms.DecimalField(
         label=_('Length'),
-        required=False
+        required=False,
     )
     length_unit = forms.ChoiceField(
         label=_('Length unit'),