docs(inputs): replace property "name" with "icon" in React playgrounds (#4190)

Closes #4135

Author: gnbm

static/usage/v7/input/start-end-slots/react.md

@@ -10,7 +10,7 @@ function Example() {
         <IonInput labelPlacement="stacked" label="Email" placeholder="[email protected]">
           <IonIcon slot="start" icon={lockClosed} aria-hidden="true"></IonIcon>
           <IonButton fill="clear" slot="end" aria-label="Show/hide">
-            <IonIcon slot="icon-only" name={eye} aria-hidden="true"></IonIcon>
+            <IonIcon slot="icon-only" icon={eye} aria-hidden="true"></IonIcon>
           </IonButton>
         </IonInput>
       </IonItem>

static/usage/v7/textarea/start-end-slots/react.md

@@ -10,7 +10,7 @@ function Example() {
         <IonTextarea labelPlacement="stacked" label="Comments" placeholder="Enter your comments">
           <IonIcon slot="start" icon={lockClosed} aria-hidden="true"></IonIcon>
           <IonButton fill="clear" slot="end" aria-label="Show/hide">
-            <IonIcon slot="icon-only" name={eye} aria-hidden="true"></IonIcon>
+            <IonIcon slot="icon-only" icon={eye} aria-hidden="true"></IonIcon>
           </IonButton>
         </IonTextarea>
       </IonItem>

static/usage/v8/input/start-end-slots/react.md

@@ -10,7 +10,7 @@ function Example() {
         <IonInput labelPlacement="stacked" label="Email" placeholder="[email protected]">
           <IonIcon slot="start" icon={lockClosed} aria-hidden="true"></IonIcon>
           <IonButton fill="clear" slot="end" aria-label="Show/hide">
-            <IonIcon slot="icon-only" name={eye} aria-hidden="true"></IonIcon>
+            <IonIcon slot="icon-only" icon={eye} aria-hidden="true"></IonIcon>
           </IonButton>
         </IonInput>
       </IonItem>

static/usage/v8/textarea/start-end-slots/react.md

@@ -10,7 +10,7 @@ function Example() {
         <IonTextarea labelPlacement="stacked" label="Comments" placeholder="Enter your comments">
           <IonIcon slot="start" icon={lockClosed} aria-hidden="true"></IonIcon>
           <IonButton fill="clear" slot="end" aria-label="Show/hide">
-            <IonIcon slot="icon-only" name={eye} aria-hidden="true"></IonIcon>
+            <IonIcon slot="icon-only" icon={eye} aria-hidden="true"></IonIcon>
           </IonButton>
         </IonTextarea>
       </IonItem>