Wrong height when TextInput has an empty string

Summary:
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The caret/cursor did not appear when the TextInput was empty. Found that the cause was because the frame of the TextInput had an height of 0
Just fill and clear a TextInput and the caret/cursor will always appear there.
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CATEGORY
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[ CLI ] [-------------] LOCATION
[ DOCS ] [ BREAKING ] [-------------]
[ GENERAL ] [ BUGFIX ] [-{Component}-]
[ INTERNAL ] [ ENHANCEMENT ] [ {File} ]
[ IOS ] [ FEATURE ] [ {Directory} ] |-----------|
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[CATEGORY] [TYPE] [LOCATION] - MESSAGE
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[IOS] [BREAKING] [FlatList] - Change a thing that breaks other things
[ANDROID] [BUGFIX] [TextInput] - Did a thing to TextInput
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[IOS] [BUGFIX] [TextInput] - This was causing the cursor/caret to not appear since the size of the frame had an height of 0.
Closes#18355
Differential Revision: D7319723
Pulled By: shergin
fbshipit-source-id: b0249ab5493b6ac310d1898ff20c0bad78cf82c9

Author: reyalpsirc

Libraries/Text/TextInput/RCTBaseTextInputShadowView.m

@@ -180,8 +180,8 @@ - (NSAttributedString *)measurableAttributedText
 // Placeholder also can represent the intrinsic size when it is visible.
 NSString *text = self.placeholder;
 if (!text.length) {
-//Zero-width space
- text = @"\u200B";
+//Note: `zero-width space` is insufficient in some cases.
+ text = @"I";
  }
  attributedText = [[NSAttributedStringalloc] initWithString:text attributes:self.textAttributes.effectiveTextAttributes];
  }

Libraries/Text/TextInput/RCTBaseTextInputShadowView.m

@@ -180,8 +180,8 @@ - (NSAttributedString *)measurableAttributedText
 // Placeholder also can represent the intrinsic size when it is visible.
 NSString *text = self.placeholder;
 if (!text.length) {
-//Zero-width space
- text = @"\u200B";
+//Note: `zero-width space` is insufficient in some cases.
+ text = @"I";
  }
  attributedText = [[NSAttributedStringalloc] initWithString:text attributes:self.textAttributes.effectiveTextAttributes];
  }

Libraries/Text/TextInput/RCTBaseTextInputShadowView.m

@@ -180,8 +180,8 @@ - (NSAttributedString *)measurableAttributedText
 // Placeholder also can represent the intrinsic size when it is visible.
 NSString *text = self.placeholder;
 if (!text.length) {
-//Zero-width space
- text = @"\u200B";
+//Note: `zero-width space` is insufficient in some cases.
+ text = @"I";
  }
  attributedText = [[NSAttributedStringalloc] initWithString:text attributes:self.textAttributes.effectiveTextAttributes];
  }

Libraries/Text/TextInput/RCTBaseTextInputShadowView.m

@@ -180,8 +180,8 @@ - (NSAttributedString *)measurableAttributedText
 // Placeholder also can represent the intrinsic size when it is visible.
 NSString *text = self.placeholder;
 if (!text.length) {
-//Zero-width space
- text = @"\u200B";
+//Note: `zero-width space` is insufficient in some cases.
+ text = @"I";
  }
  attributedText = [[NSAttributedStringalloc] initWithString:text attributes:self.textAttributes.effectiveTextAttributes];
  }

Libraries/Text/TextInput/RCTBaseTextInputShadowView.m

@@ -180,8 +180,8 @@ - (NSAttributedString *)measurableAttributedText
 // Placeholder also can represent the intrinsic size when it is visible.
 NSString *text = self.placeholder;
 if (!text.length) {
-//Zero-width space
- text = @"\u200B";
+//Note: `zero-width space` is insufficient in some cases.
+ text = @"I";
  }
  attributedText = [[NSAttributedStringalloc] initWithString:text attributes:self.textAttributes.effectiveTextAttributes];
  }

Libraries/Text/TextInput/RCTBaseTextInputShadowView.m

@@ -180,8 +180,8 @@ - (NSAttributedString *)measurableAttributedText
 // Placeholder also can represent the intrinsic size when it is visible.
 NSString *text = self.placeholder;
 if (!text.length) {
-//Zero-width space
- text = @"\u200B";
+//Note: `zero-width space` is insufficient in some cases.
+ text = @"I";
  }
  attributedText = [[NSAttributedStringalloc] initWithString:text attributes:self.textAttributes.effectiveTextAttributes];
  }

Libraries/Text/TextInput/RCTBaseTextInputShadowView.m

@@ -180,8 +180,8 @@ - (NSAttributedString *)measurableAttributedText
 // Placeholder also can represent the intrinsic size when it is visible.
 NSString *text = self.placeholder;
 if (!text.length) {
-//Zero-width space
- text = @"\u200B";
+//Note: `zero-width space` is insufficient in some cases.
+ text = @"I";
  }
  attributedText = [[NSAttributedStringalloc] initWithString:text attributes:self.textAttributes.effectiveTextAttributes];
  }

Libraries/Text/TextInput/RCTBaseTextInputShadowView.m

@@ -180,8 +180,8 @@ - (NSAttributedString *)measurableAttributedText
 // Placeholder also can represent the intrinsic size when it is visible.
 NSString *text = self.placeholder;
 if (!text.length) {
-//Zero-width space
- text = @"\u200B";
+//Note: `zero-width space` is insufficient in some cases.
+ text = @"I";
  }
  attributedText = [[NSAttributedStringalloc] initWithString:text attributes:self.textAttributes.effectiveTextAttributes];
  }