Implement direction-agnostic arc radii handling in shape().

Differential Revision: https://phabricator.services.mozilla.com/D272823

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1982757
gecko-commit: 7f41ffc04dd6e3bc610d55ec82fe98be6963ca83
gecko-reviewers: emilio, firefox-style-system-reviewers, layout-reviewers

Author: Swarup Ukil

css/css-masking/animations/clip-path-interpolation-shape-arc-direction-agnostic-radius.html

@@ -4,7 +4,7 @@
   <title>CSS Masking: Test animating single-value arc radius of the shape() function</title>
   <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
   <link rel="match" href="clip-path-interpolation-shape-arc-direction-agnostic-radius-ref.html">
-  <meta name="fuzzy" content="maxDifference=0-10;totalPixels=0-360">
+  <meta name="fuzzy" content="maxDifference=0-69;totalPixels=0-360">
 </head>
 <style>
 @keyframes animate-shape {

css/css-masking/clip-path/clip-path-shape-011.html

@@ -5,7 +5,7 @@
   <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
   <link rel="match" href="reference/clip-path-shape-arc-ref.html">
   <meta name="assert" content="When providing one radius value with percentage, the percentage should be relative to the diagonal.">
-<meta name="fuzzy" content="maxDifference=0-64;totalPixels=0-128">
+<meta name="fuzzy" content="maxDifference=0-67;totalPixels=0-128">
 </head>
 <style>
 #shape {