Increase trace screenshot scale factor to 1x (facebook#56136)

Summary:
Pull Request resolved: facebook#56136

Following D97131485, brings iOS screenshot recording to parity with Android.

NOTE: Dynamic frame sampling (D97131485) becomes more load bearing after this change, as a 1x scale increases processing overhead significantly. Let's continue dogfooding.

Changelog: [Internal]

Reviewed By: rubennorte

Differential Revision: D97131484

fbshipit-source-id: 4c03842ae22b905a50f989ff68fece7acc289a67

Author: huntie

packages/react-native/React/DevSupport/RCTFrameTimingsObserver.mm

@@ -21,7 +21,7 @@
 
 using namespace facebook::react;
 
-static constexpr CGFloat kScreenshotScaleFactor = 0.75;
+static constexpr CGFloat kScreenshotScaleFactor = 1.0;
 static constexpr CGFloat kScreenshotJPEGQuality = 0.8;
 
 @implementation RCTFrameTimingsObserver {