fix(at signs): tighter regex (with lookbehind)

Author: brettz9

package.json

@@ -109,7 +109,7 @@
     "jsonpath"
   ],
   "browserslist": [
-    "last 2 versions, not IE 10, not IE 11, not ie_mob 10, not ie_mob 11, not op_mini all, not bb 7, not bb 10"
+    "last 2 versions, not IE 10, not IE 11, not ie_mob 10, not ie_mob 11, not op_mini all, not bb 7, not bb 10, not kaios 2.5"
   ],
   "c8": {
     "reporter": [

src/jsonpath.js

@@ -1052,7 +1052,7 @@ class JSONPathClass {
                 //   regex literals (a `/` where an operand is expected,
                 //   as opposed to division) intact
                 .replaceAll(
-                    /('(?:\\.|[^'\\])*'|"(?:\\.|[^"\\])*"|(?:^|[\(,=:\[!\|?\{\};+\-*%<>~^]|&)\s*\/(?:\\.|\[(?:\\.|[^\]\\])*\]|[^\/\\\[])+\/[dgimsuvy]*)|@(?![\w$])/gv,
+                    /('(?:\\.|[^'\\])*'|"(?:\\.|[^"\\])*"|(?<=(?:^|[\(,=:\[!\|?\{\};+\-*%<>~^]|&)\s*)\/(?:\\.|\[(?:\\.|[^\]\\])*\]|[^\/\\\[])+\/[dgimsuvy]*)|@(?![\w$])/gv,
                     (_, literal) => literal ?? '_$_v'
                 );
             if (containsPath) {