Let text and fragment nodes inherit their parent as their owner

They don't have their own owner so to get some owner stacks we can use
the parent as the owner.

Effectively this also means using the parent's debugTask for native stacks.

This ensures that createTask is active when a HostText node runs its validation.

packages/react-reconciler/src/ReactChildFiber.js

@@ -514,6 +514,11 @@ function createChildReconciler(
       const created = createFiberFromText(textContent, returnFiber.mode, lanes);
       created.return = returnFiber;
       if (__DEV__) {
+        // We treat the parent as the owner for stack purposes.
+        created._debugOwner = returnFiber;
+        if (enableOwnerStacks) {
+          created._debugTask = returnFiber._debugTask;
+        }
         created._debugInfo = currentDebugInfo;
       }
       return created;
@@ -630,6 +635,11 @@ function createChildReconciler(
       );
       created.return = returnFiber;
       if (__DEV__) {
+        // We treat the parent as the owner for stack purposes.
+        created._debugOwner = returnFiber;
+        if (enableOwnerStacks) {
+          created._debugTask = returnFiber._debugTask;
+        }
         created._debugInfo = currentDebugInfo;
       }
       return created;
@@ -665,6 +675,11 @@ function createChildReconciler(
       );
       created.return = returnFiber;
       if (__DEV__) {
+        // We treat the parent as the owner for stack purposes.
+        created._debugOwner = returnFiber;
+        if (enableOwnerStacks) {
+          created._debugTask = returnFiber._debugTask;
+        }
         created._debugInfo = currentDebugInfo;
       }
       return created;
@@ -729,6 +744,11 @@ function createChildReconciler(
         );
         created.return = returnFiber;
         if (__DEV__) {
+          // We treat the parent as the owner for stack purposes.
+          created._debugOwner = returnFiber;
+          if (enableOwnerStacks) {
+            created._debugTask = returnFiber._debugTask;
+          }
           const prevDebugInfo = pushDebugInfo(newChild._debugInfo);
           created._debugInfo = currentDebugInfo;
           currentDebugInfo = prevDebugInfo;
@@ -1610,6 +1630,14 @@ function createChildReconciler(
     deleteRemainingChildren(returnFiber, currentFirstChild);
     const created = createFiberFromText(textContent, returnFiber.mode, lanes);
     created.return = returnFiber;
+    if (__DEV__) {
+      // We treat the parent as the owner for stack purposes.
+      created._debugOwner = returnFiber;
+      if (enableOwnerStacks) {
+        created._debugTask = returnFiber._debugTask;
+      }
+      created._debugInfo = currentDebugInfo;
+    }
     return created;
   }
 
@@ -1683,6 +1711,11 @@ function createChildReconciler(
       );
       created.return = returnFiber;
       if (__DEV__) {
+        // We treat the parent as the owner for stack purposes.
+        created._debugOwner = returnFiber;
+        if (enableOwnerStacks) {
+          created._debugTask = returnFiber._debugTask;
+        }
         created._debugInfo = currentDebugInfo;
       }
       validateFragmentProps(element, created, returnFiber);