Auto merge of #25543 - szeged:mmatyas__webgl_fns_uniforms_p3, r=jdm

Add support for WebGL2 uniform matrix operations

Adds support for the `uniformMatrix[234]x[234]fv` WebGL2 functions.
See: https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.8

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Note: Similarly to #25538, some of the functions here also overlap with their WebGL 1 variant.

cc @jdm @zakorgy @imiklos

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