Fix with_scale_factor_override improperly setting scale_factor_override (#12321)

# Objective

Fixes #12282.

## Solution

Use `set_scale_factor_override` in `with_scale_factor_override`.

Author: chompaa

crates/bevy_window/src/window.rs

@@ -673,7 +673,7 @@ impl WindowResolution {
 
     /// Builder method for adding a scale factor override to the resolution.
     pub fn with_scale_factor_override(mut self, scale_factor_override: f32) -> Self {
-        self.scale_factor_override = Some(scale_factor_override);
+        self.set_scale_factor_override(Some(scale_factor_override));
         self
     }