Fixed Response::getIsOk() to include entire 2xx range

[rhertogh]

Fixed \yii\httpclient\Response::getIsOk() to include entire 2xx response code range.

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	❌
Fixed issues	-

[what-the-diff]

PR Summary

• Expanded Success Range in Response Check
  The getIsOk() method in Response.php is now modified to accept a wider range of successful responses. Instead of confirming only code '20' as valid, it now recognizes all status codes from 200 to 299 as acceptable. This provides greater flexibility in treating various success responses as valid.

• Enhanced Testing Scope
  In ResponseTest.php, the testing method dataProviderIsOk() has been expanded to include more status codes in its test cases. It now embeds status codes 100 and 226, which contributes to more comprehensive testing and ensures the operational readiness of our code from all angles.

[samdark]

👍