Fix bug in shader uniform checking

Author: wcandillon

package/src/skia/types/Shader/Shader.ts

@@ -40,7 +40,7 @@ export const processUniforms = (
   for (let i = 0; i < uniformsCount; i++) {
     const name = source.getUniformName(i);
     const value = uniforms[name];
-    if (!value === undefined) {
+    if (value === undefined) {
       throw new Error(
         // eslint-disable-next-line max-len
         `The runtime effect has the uniform value "${name}" declared, but it is missing from the uniforms property of the Runtime effect.`