no-system-props: Add position as allowed prop for Dialog (#145)

* Add position as allowed prop for Dialog

* Create short-kings-tease.md

Author: siddharthkp

.changeset/short-kings-tease.md

@@ -0,0 +1,5 @@
+---
+"eslint-plugin-primer-react": patch
+---
+
+no-system-props: Add `position` as allowed prop for `Dialog`

src/rules/no-system-props.js

@@ -21,7 +21,7 @@ const excludedComponentProps = new Map([
   ['Blankslate', new Set(['border'])],
   ['Button', new Set(['alignContent'])],
   ['CircleOcticon', new Set(['size'])],
-  ['Dialog', new Set(['width', 'height'])],
+  ['Dialog', new Set(['width', 'height', 'position'])],
   ['IssueLabelToken', new Set(['size'])],
   ['Overlay', new Set(['width', 'height', 'maxHeight', 'position', 'top', 'right', 'bottom', 'left'])],
   ['ProgressBar', new Set(['bg'])],