[Color] Fix HarmonizedColorsOptions.Builder#setColorAttributes is mar…

…ked as nullable

Resolves #2649

GIT_ORIGIN_REV_ID=b1f2d2ca1d4c5b25370eb0902fbf35729d6fc0a4
PiperOrigin-RevId: 442676674

(cherry picked from commit 824a12b)

lib/java/com/google/android/material/color/HarmonizedColorsOptions.java

@@ -102,7 +102,7 @@ public Builder setColorResourceIds(@NonNull @ColorRes int[] colorResourceIds) {
      *
      * @param colorAttributes The {@link HarmonizedColorAttributes} that needs to be harmonized.
      */
-    @Nullable
+    @NonNull
     public Builder setColorAttributes(@Nullable HarmonizedColorAttributes colorAttributes) {
       this.colorAttributes = colorAttributes;
       return this;