Auto merge of #15334 - canaltinova:inverse, r=nox

Fix the panic when transform is non-invertible

<!-- Please describe your changes on the following line: -->
Fixes the panic when transform is non-invertible.
Counterpart of https://github.com/servo/webrender/pull/823
r? @glennw

---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #13266 (github issue number if applicable).

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- [x] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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tests/wpt/mozilla/meta/MANIFEST.json

@@ -13335,6 +13335,12 @@
      {}
     ]
    ],
+   "mozilla/non-invertible-transform.html": [
+    [
+     "/_mozilla/mozilla/non-invertible-transform.html",
+     {}
+    ]
+   ],
    "mozilla/out-of-order-stylesheet-loads-and-imports.html": [
     [
      "/_mozilla/mozilla/out-of-order-stylesheet-loads-and-imports.html",
@@ -25908,6 +25914,10 @@
    "fe965e58fdcb78d08384a9fde74c982e34768745",
    "testharness"
   ],
+  "mozilla/non-invertible-transform.html": [
+   "6fa68fe08c9dd5d594e838da51617951193fee19",
+   "testharness"
+  ],
   "mozilla/out-of-order-stylesheet-loads-and-imports.html": [
    "462f5b6a1f47e0e40ad407ccd13b3058176d106d",
    "testharness"