chore: rephrase

Author: t0maboro

versioned_docs/version-7.x/native-stack-navigator.md

@@ -562,7 +562,9 @@ Additionaly there are following options available:
 
 :::warning
 
-On iOS, when showing the keyboard for small detent, the system will temporarily resize the sheet above the defined detent, always showing dimming background, even if the user hasn't expanded it manually over the `sheetLargestUndimmedDetentIndex` value.
+On iOS, the native implementation might resize the the sheet w/o explicitly changing the detent level, e.g. in case of keyboard appearance.
+
+In case after such resize the sheet exceeds height for which in regular scenario a dimming view would be applied - it will be applied, even in the detent has not effectively been changed.
 
 :::