web/sfe: bug: polyfill needed to supply Object.assign() to IE11. (cherry-pick #20126 to version-2025.12) (#20136)

* Cherry-pick #20126 to version-2025.12 (with conflicts)

This cherry-pick has conflicts that need manual resolution.

Original PR: #20126
Original commit: b16dd8ad0e

* fix conflict

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

---------

Signed-off-by: Jens Langhammer <jens@goauthentik.io>
Co-authored-by: Ken Sternberg <133134217+kensternberg-authentik@users.noreply.github.com>
Co-authored-by: Marcelo Elizeche Landó <marcelo@goauthentik.io>
Co-authored-by: Jens Langhammer <jens@goauthentik.io>

web/package-lock.json

@@ -6381,7 +6381,6 @@
             "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.6.0.tgz",
             "integrity": "sha512-7VT13fmjotKpGipCW9JEQAusEPE+Ei8nl6/g4FBAmIm0GOOLMua9NDDo/DWp0ZAxCr3cPq5ZpBqmPAQgDda2Pw==",
             "license": "MIT",
-            "peer": true,
             "dependencies": {
                 "anymatch": "~3.1.2",
                 "braces": "~3.0.2",
@@ -6583,9 +6582,9 @@
             "license": "MIT"
         },
         "node_modules/core-js": {
-            "version": "3.47.0",
-            "resolved": "https://registry.npmjs.org/core-js/-/core-js-3.47.0.tgz",
-            "integrity": "sha512-c3Q2VVkGAUyupsjRnaNX6u8Dq2vAdzm9iuPj5FW0fRxzlxgq9Q39MDq10IvmQSpLgHQNyQzQmOo6bgGHmH3NNg==",
+            "version": "3.48.0",
+            "resolved": "https://registry.npmjs.org/core-js/-/core-js-3.48.0.tgz",
+            "integrity": "sha512-zpEHTy1fjTMZCKLHUZoVeylt9XrzaIN2rbPXEt0k+q7JE5CkCZdo6bNq55bn24a69CH7ErAVLKijxJja4fw+UQ==",
             "hasInstallScript": true,
             "license": "MIT",
             "funding": {
@@ -10476,8 +10475,7 @@
             "version": "3.7.1",
             "resolved": "https://registry.npmjs.org/jquery/-/jquery-3.7.1.tgz",
             "integrity": "sha512-m4avr8yL8kmFN8psrbFFFmB/If14iN5o9nw/NgnnM+kybDJpRsAynV2BsfpTYrTRysYUdADVD7CkUUizgkpLfg==",
-            "license": "MIT",
-            "peer": true
+            "license": "MIT"
         },
         "node_modules/js-levenshtein-esm": {
             "version": "2.0.0",
@@ -17764,6 +17762,7 @@
                 "@swc/core": "^1.15.3",
                 "base64-js": "^1.5.1",
                 "bootstrap": "^4.6.2",
+                "core-js": "^3.48.0",
                 "formdata-polyfill": "^2025.11.0",
                 "globby": "16.0.0",
                 "jquery": "^3.7.1",

web/packages/sfe/package.json

@@ -23,6 +23,7 @@
         "@swc/core": "^1.15.3",
         "base64-js": "^1.5.1",
         "bootstrap": "^4.6.2",
+        "core-js": "^3.48.0",
         "formdata-polyfill": "^2025.11.0",
         "globby": "16.0.0",
         "jquery": "^3.7.1",

web/packages/sfe/src/index.ts

@@ -1,5 +1,6 @@
 import "formdata-polyfill";
 import "weakmap-polyfill";
+import "core-js/actual/object/assign";
 
 import {
     type AccessDeniedChallenge,