Auto merge of #13159 - emilio:negative-calc, r=notriddle

style: Don't incorrectly clamp values in calc that might not be only lengths.

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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 #__ (github issue number if applicable).

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- [x] There are tests for these changes OR

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tests/wpt/mozilla/meta/MANIFEST.json

@@ -3648,6 +3648,18 @@
             "url": "/_mozilla/css/multiple_css_class_a.html"
           }
         ],
+        "css/negative-calc-cv.html": [
+          {
+            "path": "css/negative-calc-cv.html",
+            "references": [
+              [
+                "/_mozilla/css/negative-calc-cv-ref.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/negative-calc-cv.html"
+          }
+        ],
         "css/negative_margin_uncle_a.html": [
           {
             "path": "css/negative_margin_uncle_a.html",
@@ -13030,6 +13042,18 @@
           "url": "/_mozilla/css/multiple_css_class_a.html"
         }
       ],
+      "css/negative-calc-cv.html": [
+        {
+          "path": "css/negative-calc-cv.html",
+          "references": [
+            [
+              "/_mozilla/css/negative-calc-cv-ref.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/negative-calc-cv.html"
+        }
+      ],
       "css/negative_margin_uncle_a.html": [
         {
           "path": "css/negative_margin_uncle_a.html",