Use shared form partial for `admin/rules` views (#30067)

app/views/admin/rules/_form.html.haml

@@ -0,0 +1,7 @@
+.fields-group
+  = form.input :text,
+               wrapper: :with_block_label
+
+.fields-group
+  = form.input :hint,
+               wrapper: :with_block_label

app/views/admin/rules/edit.html.haml

@@ -1,14 +1,10 @@
 - content_for :page_title do
   = t('admin.rules.edit')
 
-= simple_form_for @rule, url: admin_rule_path(@rule) do |f|
+= simple_form_for @rule, url: admin_rule_path(@rule) do |form|
   = render 'shared/error_messages', object: @rule
 
-  .fields-group
-    = f.input :text, wrapper: :with_block_label
-
-  .fields-group
-    = f.input :hint, wrapper: :with_block_label
+  = render form
 
   .actions
-    = f.button :button, t('generic.save_changes'), type: :submit
+    = form.button :button, t('generic.save_changes'), type: :submit

app/views/admin/rules/index.html.haml

@@ -6,17 +6,13 @@
 %hr.spacer/
 
 - if can? :create, :rule
-  = simple_form_for @rule, url: admin_rules_path do |f|
+  = simple_form_for @rule, url: admin_rules_path do |form|
     = render 'shared/error_messages', object: @rule
 
-    .fields-group
-      = f.input :text, wrapper: :with_block_label
-
-    .fields-group
-      = f.input :hint, wrapper: :with_block_label
+    = render form
 
     .actions
-      = f.button :button, t('admin.rules.add_new'), type: :submit
+      = form.button :button, t('admin.rules.add_new'), type: :submit
 
   %hr.spacer/