Bug: The name of a property of the AssertionGui control node is misspelled.

### Expected behavior

正确的名称应该是"Assertion.test_strings"，但当前显示为"Asserion.test_strings"。
In JMX file. The correct name should be "Assertion.test_strings", but it is currently displayed as "Asserion.test_strings".

### Actual behavior


### Steps to reproduce the problem

重现步骤：
1. 打开JMeter并创建一个新的测试计划。
2. 添加一个HTTP请求或其他任何类型的请求。
3. 右键点击请求，选择"Add" -> "Assertions" -> "Response Assertion"。
4. 检查jmx文件中的AssertionGui控件中的属性节点名称。

Reproduction Steps:
1. Open JMeter and create a new test plan.
2. Add an HTTP request or any other type of request.
3. Right-click on the request and select "Add" -> "Assertions" -> "Response Assertion".
4. Check the node name in the AssertionGui control.

### JMeter Version

5.6.*，5.5.*

### Java Version

_No response_

### OS Version

windows

Start by reproducing the issue in JMeter 5.5 or 5.6 using the listed test-plan steps, then inspect the generated JMX file's AssertionGui property node. Done means the node is consistently named "Assertion.test_strings" rather than "Asserion.test_strings" and the corrected spelling is covered by the relevant verification.

Written by the indexing model from the issue text.