fix(5020): add tests to validate error isn't thrown when contenteditable is added

test/validator/samples/a11y-contenteditable-element-without-child/errors.json

@@ -0,0 +1,17 @@
+[
+	{
+		"code": "missing-contenteditable-attribute",
+		"message": "'contenteditable' attribute is required for textContent and innerHTML two-way bindings",
+		"start": {
+			"line": 6,
+			"column": 3,
+			"character": 157
+		},
+		"end": {
+			"line": 6,
+			"column": 24,
+			"character": 178
+		},
+		"pos": 157
+	}
+]

test/validator/samples/a11y-contenteditable-element-without-child/input.svelte

@@ -0,0 +1,6 @@
+<script>
+	let text = 'Hello world';
+</script>
+<p bind:textContent={text} contenteditable="true"></p>
+<p bind:innerHTML={text} contenteditable="true"></p>
+<p bind:innerHTML={text}></p>