remove additional pixel from checkbox on checkable button

Author: dleroux

.changeset/soft-waves-invite.md

@@ -0,0 +1,5 @@
+---
+'@shopify/polaris': patch
+---
+
+Fixed position of Bulk Action Checkbox

polaris-react/src/components/CheckableButton/CheckableButton.scss

@@ -85,9 +85,7 @@ $button-vertical-padding: calc(
   pointer-events: none;
   height: var(--p-choice-size);
   width: var(--p-choice-size);
-  margin-left: calc(
-    -1 * ((var(--p-space-2) + var(--p-space-025))) - var(--p-control-border-width)
-  ); // 1px accounts for border
+  margin-left: calc(-1 * (var(--p-space-2) + var(--p-space-025)));
 }
 
 .Label {