fix: prevent asset conflicts between React and Grid.js versions

Add coexistence checks to all enqueue methods to prevent loading
both React and Grid.js assets simultaneously.

Changes:
- ReactAdmin.php: Only enqueue React assets when ?react=1
- Init.php: Skip Grid.js when React active on admin pages
- Form.php, Coupon.php, Access.php: Restore classic assets when ?react=0
- Customer.php, Product.php, License.php: Add coexistence checks

Now the toggle between Classic and React versions works correctly.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

node_modules/svg-parser/CHANGELOG.md

@@ -0,0 +1,46 @@
+# svg-parser changelog
+
+## 2.0.3
+
+* Fix reported error location ([#9](https://github.com/Rich-Harris/svg-parser/issues/9))
+
+## 2.0.2
+
+* Allow underscores in attribute names ([#4](https://github.com/Rich-Harris/svg-parser/issues/4))
+
+## 2.0.1
+
+* Fix empty/space attributes
+
+## 2.0.0
+
+* Migrate to HAST
+
+## 1.0.6
+
+* Remove unused dependency
+
+## 1.0.5
+
+* Handle doctype and CDATA
+
+## 1.0.4
+
+* Handle unexpected end of input
+
+## 1.0.3
+
+* Prevent infinite loops on bad final closing tag
+
+## 1.0.2
+
+* Prevent `""=true` attributes
+
+## 1.0.1
+
+* Allow attributes with numbers (e.g. `x1`)
+* Fix error messages
+
+## 1.0.0
+
+* First release