fix(carbon-components-react) TileGroup's onChange signature: all arguments are mandatory (#42125)

* Updated TileGroup's onChange signature: all arguments are mandatory

* Added test for the onChange

* fix lint issues

* Fixed merge issues

types/carbon-components-react/carbon-components-react-tests.tsx

@@ -12,6 +12,7 @@ import {
     TableBatchActions,
     TableHeader,
     TableRow,
+    TileGroup,
     TooltipDefinition,
     TextArea,
     TextInput,
@@ -268,6 +269,20 @@ const uisLinkT5 = (
     <Link<TestCompPropsOverwrite> element={TestComp3} someProp="asdf">Testing Overwrite</Link>
 );
 
+// TileGroup
+// Value nor name can be undefined
+let value: string|number = 5;
+let name = "old name";
+const tileGroupA = (
+    <TileGroup
+        name="my-tile-group-name"
+        onChange={(newVal, newName, e) => {
+            value = newVal;
+            name = newName;
+        }}
+    />
+);
+
 // TooltipDefinition
 const tooltipDefHasAlign = (
     <TooltipDefinition tooltipText="my text" align="end" />

types/carbon-components-react/lib/components/TileGroup/TileGroup.d.ts

@@ -12,7 +12,7 @@ interface InheritedProps {
 export interface TileGroupProps extends InheritedProps {
     defaultSelected?: TileGroupProps["valueSelected"],
     legend?: string,
-    onChange?(value: TileGroupProps["valueSelected"], name: TileGroupProps["name"], event: RadioTileChangeEvent): void,
+    onChange?(value: NonNullable<TileGroupProps["valueSelected"]>, name: NonNullable<TileGroupProps["name"]>, event: RadioTileChangeEvent): void,
     valueSelected?: string | number,
 }