[BUG]: View->reset() sets contents to NULL instead of empty string

[dugwood]

Describe the bug
Reset of view doesn't use the default class value of ->content (= empty string), which will raise an error on PHP 8.2

To Reproduce
Here the content is set to NULL instead of an empty string: https://github.com/phalcon/cphalcon/blob/5.0.x/phalcon/Mvc/View.zep#L771

Which will raise:

Phalcon\Http\Response::setContent(): Passing null to parameter #1 ($content) of type string is deprecated

I don't have an example, but it happens when I'm redirecting the user before rendering the view (using Dispatcher's events). Most probably because of view->disable(). But in the end, view->content should not be initialized with NULL.

Expected behavior
View should be reset as expected.

Details

• Phalcon version: 5.2.2 (but 5.2.4 has the same code)
• PHP Version: 8.2.7
• Operating System: Linux Debian stable
• Installation type: PECL
• Zephir version (if any): -
• Server: Lighttpd

[niden]

Resolved in #16438

Thank you @dugwood and @rudiservo