Auto merge of #18177 - MortimerGoro:oes_standard_derivatives, r=emilio

Implement WebGL OES_standard_derivatives extension.

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Implement WebGL OES_standard_derivatives extension. Some Three.js 3D models fail to render because of the lack of this extension.

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- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (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/metadata/webgl/conformance-1.0.3/conformance/extensions/oes-standard-derivatives.html.ini

@@ -1,11 +0,0 @@
-[oes-standard-derivatives.html]
-  type: testharness
-  [WebGL test #3: successfullyParsed should be true (of type boolean). Was undefined (of type undefined).]
-    expected: FAIL
-
-  [WebGL test #0: Unable to fetch WebGL rendering context for Canvas]
-    expected: FAIL
-
-  [WebGL test #1: WebGL context does not exist]
-    expected: FAIL
-