Use Unicode aware character-wise slicing (#159)

src/app/molecules/image-upload/ImageUpload.jsx

@@ -48,7 +48,7 @@ function ImageUpload({
       >
         <Avatar
           imageSrc={imageSrc}
-          text={text.slice(0, 1)}
+          text={text}
           bgColor={bgColor}
           size="large"
         />

src/app/molecules/people-selector/PeopleSelector.jsx

@@ -18,7 +18,7 @@ function PeopleSelector({
         onClick={onClick}
         type="button"
       >
-        <Avatar imageSrc={avatarSrc} text={name.slice(0, 1)} bgColor={color} size="extra-small" />
+        <Avatar imageSrc={avatarSrc} text={name} bgColor={color} size="extra-small" />
         <Text className="people-selector__name" variant="b1">{name}</Text>
         {peopleRole !== null && <Text className="people-selector__role" variant="b3">{peopleRole}</Text>}
       </button>

src/app/molecules/room-intro/RoomIntro.jsx

@@ -17,7 +17,7 @@ function RoomIntro({
 }) {
   return (
     <div className="room-intro">
-      <Avatar imageSrc={avatarSrc} text={name.slice(0, 1)} bgColor={colorMXID(roomId)} size="large" />
+      <Avatar imageSrc={avatarSrc} text={name} bgColor={colorMXID(roomId)} size="large" />
       <div className="room-intro__content">
         <Text className="room-intro__name" variant="h1">{heading}</Text>
         <Text className="room-intro__desc" variant="b1">{linkifyContent(desc)}</Text>

src/app/molecules/room-selector/RoomSelector.jsx

@@ -51,7 +51,7 @@ function RoomSelector({
       content={(
         <>
           <Avatar
-            text={name.slice(0, 1)}
+            text={name}
             bgColor={colorMXID(roomId)}
             imageSrc={imageSrc}
             iconSrc={iconSrc}

src/app/molecules/room-tile/RoomTile.jsx

@@ -22,7 +22,7 @@ function RoomTile({
         <Avatar
           imageSrc={avatarSrc}
           bgColor={colorMXID(id)}
-          text={name.slice(0, 1)}
+          text={name}
         />
       </div>
       <div className="room-tile__content">