Make TextEncoderEncodeIntoResult members required (#1547)

Co-authored-by: saschanaz <saschanaz@users.noreply.github.com>

baselines/audioworklet.generated.d.ts

@@ -124,8 +124,8 @@ interface TextDecoderOptions {
 }
 
 interface TextEncoderEncodeIntoResult {
-    read?: number;
-    written?: number;
+    read: number;
+    written: number;
 }
 
 interface Transformer<I = any, O = any> {

baselines/dom.generated.d.ts

@@ -1854,8 +1854,8 @@ interface TextDecoderOptions {
 }
 
 interface TextEncoderEncodeIntoResult {
-    read?: number;
-    written?: number;
+    read: number;
+    written: number;
 }
 
 interface TouchEventInit extends EventModifierInit {

baselines/serviceworker.generated.d.ts

@@ -651,8 +651,8 @@ interface TextDecoderOptions {
 }
 
 interface TextEncoderEncodeIntoResult {
-    read?: number;
-    written?: number;
+    read: number;
+    written: number;
 }
 
 interface Transformer<I = any, O = any> {

baselines/sharedworker.generated.d.ts

@@ -617,8 +617,8 @@ interface TextDecoderOptions {
 }
 
 interface TextEncoderEncodeIntoResult {
-    read?: number;
-    written?: number;
+    read: number;
+    written: number;
 }
 
 interface Transformer<I = any, O = any> {

baselines/webworker.generated.d.ts

@@ -691,8 +691,8 @@ interface TextDecoderOptions {
 }
 
 interface TextEncoderEncodeIntoResult {
-    read?: number;
-    written?: number;
+    read: number;
+    written: number;
 }
 
 interface Transformer<I = any, O = any> {

inputfiles/overridingTypes.jsonc

@@ -3367,6 +3367,19 @@
                     }
                 }
             },
+            // TextEncoderEncodeIntoResult is used only for return type, always with all fields defined
+            "TextEncoderEncodeIntoResult": {
+                "members": {
+                    "member": {
+                        "read": {
+                            "required": true
+                        },
+                        "written": {
+                            "required": true
+                        }
+                    }
+                }
+            },
             "UnderlyingSource": {
                 "typeParameters": [
                     {