Clean up Selective Hydration / Event Replay flag (#24156)

* clean up selective hydration / replay flag

* dont export return_targetInst

Author: salazarm

packages/react-dom/src/__tests__/ReactDOMServerPartialHydration-test.internal.js

@@ -2418,18 +2418,8 @@ describe('ReactDOMServerPartialHydration', () => {
       await promise;
     });
 
-    if (
-      gate(
-        flags =>
-          flags.enableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay,
-      )
-    ) {
-      expect(clicks).toBe(0);
-      expect(container.textContent).toBe('Click meHello');
-    } else {
-      expect(clicks).toBe(1);
-      expect(container.textContent).toBe('Hello');
-    }
+    expect(clicks).toBe(0);
+    expect(container.textContent).toBe('Click meHello');
     document.body.removeChild(container);
   });
 
@@ -2511,17 +2501,7 @@ describe('ReactDOMServerPartialHydration', () => {
       await promise;
     });
 
-    if (
-      gate(
-        flags =>
-          flags.enableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay,
-      )
-    ) {
-      expect(onEvent).toHaveBeenCalledTimes(0);
-    } else {
-      expect(onEvent).toHaveBeenCalledTimes(2);
-    }
-
+    expect(onEvent).toHaveBeenCalledTimes(0);
     document.body.removeChild(container);
   });
 
@@ -2601,16 +2581,7 @@ describe('ReactDOMServerPartialHydration', () => {
       await promise;
     });
 
-    if (
-      gate(
-        flags =>
-          flags.enableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay,
-      )
-    ) {
-      expect(clicks).toBe(0);
-    } else {
-      expect(clicks).toBe(2);
-    }
+    expect(clicks).toBe(0);
 
     document.body.removeChild(container);
   });
@@ -2695,17 +2666,7 @@ describe('ReactDOMServerPartialHydration', () => {
       resolve();
       await promise;
     });
-    if (
-      gate(
-        flags =>
-          flags.enableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay,
-      )
-    ) {
-      expect(onEvent).toHaveBeenCalledTimes(0);
-    } else {
-      expect(onEvent).toHaveBeenCalledTimes(2);
-    }
-
+    expect(onEvent).toHaveBeenCalledTimes(0);
     document.body.removeChild(container);
   });
 
@@ -2776,19 +2737,8 @@ describe('ReactDOMServerPartialHydration', () => {
       await promise;
     });
 
-    if (
-      gate(
-        flags =>
-          flags.enableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay,
-      )
-    ) {
-      expect(clicksOnChild).toBe(0);
-      expect(clicksOnParent).toBe(0);
-    } else {
-      expect(clicksOnChild).toBe(1);
-      // This will be zero due to the stopPropagation.
-      expect(clicksOnParent).toBe(0);
-    }
+    expect(clicksOnChild).toBe(0);
+    expect(clicksOnParent).toBe(0);
 
     document.body.removeChild(container);
   });
@@ -2864,16 +2814,7 @@ describe('ReactDOMServerPartialHydration', () => {
     });
 
     // We're now full hydrated.
-    if (
-      gate(
-        flags =>
-          flags.enableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay,
-      )
-    ) {
-      expect(clicks).toBe(0);
-    } else {
-      expect(clicks).toBe(1);
-    }
+    expect(clicks).toBe(0);
 
     document.body.removeChild(parentContainer);
   });
@@ -3142,19 +3083,9 @@ describe('ReactDOMServerPartialHydration', () => {
       await promise;
     });
 
-    if (
-      gate(
-        flags =>
-          flags.enableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay,
-      )
-    ) {
-      // discrete event not replayed
-      expect(submits).toBe(0);
-      expect(container.textContent).toBe('Click meHello');
-    } else {
-      expect(submits).toBe(1);
-      expect(container.textContent).toBe('Hello');
-    }
+    // discrete event not replayed
+    expect(submits).toBe(0);
+    expect(container.textContent).toBe('Click meHello');
 
     document.body.removeChild(container);
   });