Fixes #19415: Increased Circuit/WirelessLink distance upper limit (#19495)

* Fixes #19415: Increased Circuit/WirelessLink absolute distance upper limit

Also adds form validation that provides a useful message to the user
rather than a 500 error with potentially little information.

* Include forgotten migration files

* Remove unnecessary comments

* Remove more unnecessary comments

* Addresses PR feedback

* Gah, remove django migration header comment

* Clean up new has_field_errors mechanism, fix issue with ObjectAttribute

* Address PR feedback, revert changes to render_fieldset template tag

netbox/utilities/forms/mixins.py

@@ -1,10 +1,13 @@
 import time
+from decimal import Decimal
 
 from django import forms
+from django.core.validators import MaxValueValidator, MinValueValidator
 from django.utils.translation import gettext_lazy as _
 
 __all__ = (
     'CheckLastUpdatedMixin',
+    'DistanceValidationMixin',
 )
 
 
@@ -44,3 +47,13 @@ class CheckLastUpdatedMixin(forms.Form):
                 "This object has been modified since the form was rendered. Please consult the object's change "
                 "log for details."
             ))
+
+
+class DistanceValidationMixin(forms.Form):
+    distance = forms.DecimalField(
+        required=False,
+        validators=[
+            MinValueValidator(Decimal(0)),
+            MaxValueValidator(Decimal(100000)),
+        ]
+    )