fix(ios): removed default value (#46020)

Summary:
Removed UIReturnKeyDefault as it caused bug when there wasn't any type.

## Changelog:

[IOS] [REMOVED]: UIReturnKeyDefault

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[ANDROID|GENERAL|IOS|INTERNAL] [BREAKING|ADDED|CHANGED|DEPRECATED|REMOVED|FIXED|SECURITY] - Message

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Pull Request resolved: https://github.com/facebook/react-native/pull/46020

Reviewed By: christophpurrer

Differential Revision: D61277058

Pulled By: cipolleschi

fbshipit-source-id: 18349c49b05d492a2c2ed5713af3ceb6d3728e70

packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputView.mm

@@ -651,8 +651,6 @@ RCT_NOT_IMPLEMENTED(-(instancetype)initWithFrame : (CGRect)frame)
 - (NSString *)returnKeyTypeToString:(UIReturnKeyType)returnKeyType
 {
   switch (returnKeyType) {
-    case UIReturnKeyDefault:
-      return @"Default";
     case UIReturnKeyGo:
       return @"Go";
     case UIReturnKeyNext:
@@ -680,7 +678,6 @@ RCT_NOT_IMPLEMENTED(-(instancetype)initWithFrame : (CGRect)frame)
 {
   returnKeyTypesSet = [NSSet setWithObjects:@(UIReturnKeyDone),
                                             @(UIReturnKeyGo),
-                                            @(UIReturnKeyDefault),
                                             @(UIReturnKeyNext),
                                             @(UIReturnKeySearch),
                                             @(UIReturnKeySend),

packages/react-native/React/Fabric/Mounting/ComponentViews/TextInput/RCTTextInputComponentView.mm

@@ -471,8 +471,6 @@ static NSSet<NSNumber *> *returnKeyTypesSet;
 - (NSString *)returnKeyTypeToString:(UIReturnKeyType)returnKeyType
 {
   switch (returnKeyType) {
-    case UIReturnKeyDefault:
-      return @"Default";
     case UIReturnKeyGo:
       return @"Go";
     case UIReturnKeyNext:
@@ -500,7 +498,6 @@ static NSSet<NSNumber *> *returnKeyTypesSet;
 {
   returnKeyTypesSet = [NSSet setWithObjects:@(UIReturnKeyDone),
                                             @(UIReturnKeyGo),
-                                            @(UIReturnKeyDefault),
                                             @(UIReturnKeyNext),
                                             @(UIReturnKeySearch),
                                             @(UIReturnKeySend),