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/comment-parser/lib/parser/source-parser.cjs

@@ -0,0 +1,68 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+const primitives_js_1 = require("../primitives.cjs");
+
+const util_js_1 = require("../util.cjs");
+
+function getParser({
+  startLine = 0,
+  markers = primitives_js_1.Markers
+} = {}) {
+  let block = null;
+  let num = startLine;
+  return function parseSource(source) {
+    let rest = source;
+    const tokens = (0, util_js_1.seedTokens)();
+    [tokens.lineEnd, rest] = (0, util_js_1.splitCR)(rest);
+    [tokens.start, rest] = (0, util_js_1.splitSpace)(rest);
+
+    if (block === null && rest.startsWith(markers.start) && !rest.startsWith(markers.nostart)) {
+      block = [];
+      tokens.delimiter = rest.slice(0, markers.start.length);
+      rest = rest.slice(markers.start.length);
+      [tokens.postDelimiter, rest] = (0, util_js_1.splitSpace)(rest);
+    }
+
+    if (block === null) {
+      num++;
+      return null;
+    }
+
+    const isClosed = rest.trimRight().endsWith(markers.end);
+
+    if (tokens.delimiter === '' && rest.startsWith(markers.delim) && !rest.startsWith(markers.end)) {
+      tokens.delimiter = markers.delim;
+      rest = rest.slice(markers.delim.length);
+      [tokens.postDelimiter, rest] = (0, util_js_1.splitSpace)(rest);
+    }
+
+    if (isClosed) {
+      const trimmed = rest.trimRight();
+      tokens.end = rest.slice(trimmed.length - markers.end.length);
+      rest = trimmed.slice(0, -markers.end.length);
+    }
+
+    tokens.description = rest;
+    block.push({
+      number: num,
+      source,
+      tokens
+    });
+    num++;
+
+    if (isClosed) {
+      const result = block.slice();
+      block = null;
+      return result;
+    }
+
+    return null;
+  };
+}
+
+exports.default = getParser;
+//# sourceMappingURL=source-parser.cjs.map