A Requred Validation Message is not cleared when a question becomes d…

…isabled fix #7306 (#7315)

src/question.ts

@@ -1363,6 +1363,9 @@ export class Question extends SurveyElement<Question>
   protected onReadOnlyChanged(): void {
     this.setPropertyValue("isInputReadOnly", this.isInputReadOnly);
     super.onReadOnlyChanged();
+    if(this.isReadOnly) {
+      this.clearErrors();
+    }
     this.updateQuestionCss();
     this.calcRenderedCommentPlaceholder();
   }

tests/surveyquestiontests.ts

@@ -7621,4 +7621,21 @@ QUnit.test("QuestionHtmlModel hide some properties", function (assert) {
   ["hideNumber", "state", "titleLocation", "descriptionLocation", "errorLocation", "indent", "width"].forEach(property => {
     assert.equal(Serializer.findProperty("html", property).visible, false, property + " should be hidden");
   });
-});
+});
+QUnit.test("Hide errors on making question disabled", function (assert) {
+  const survey = new SurveyModel({
+    elements: [
+      { type: "text", name: "q1", inputType: "number" },
+      { type: "text", name: "q2", isRequired: true, enableIf: "{q1} < 10" }
+    ]
+  });
+  const q1 = survey.getQuestionByName("q1");
+  const q2 = survey.getQuestionByName("q2");
+  q1.value = 1;
+  q2.validate(true);
+  assert.equal(q2.isReadOnly, false, "q2 is enabled");
+  assert.equal(q2.errors.length, 1, "There is errors in the question");
+  q1.value = 100;
+  assert.equal(q2.isReadOnly, true, "q2 is read-only");
+  assert.equal(q2.errors.length, 0, "Clear errors on making questio read-only");
+});