Update NotoSerifHentaigana entry in font configuration XML

Bug: 278763704
Test: Manually done
Change-Id: I22bf47a913f3b25b3f095e4ab276af79e51a4a76
Merged-In: I22bf47a913f3b25b3f095e4ab276af79e51a4a76
Merged-In: I54105704d8f453663a2e8781b2cb680d9ab03c73

data/fonts/fonts.xml

@@ -1432,6 +1432,16 @@
               postScriptName="NotoSerifCJKjp-Regular">NotoSerifCJK-Regular.ttc
         </font>
     </family>
+    <family lang="ja">
+        <font weight="400" style="normal" postScriptName="NotoSerifHentaigana-ExtraLight">
+            NotoSerifHentaigana.ttf
+            <axis tag="wght" stylevalue="400"/>
+        </font>
+        <font weight="700" style="normal" postScriptName="NotoSerifHentaigana-ExtraLight">
+            NotoSerifHentaigana.ttf
+            <axis tag="wght" stylevalue="700"/>
+        </font>
+    </family>
     <family lang="ko">
         <font weight="400" style="normal" index="1" postScriptName="NotoSansCJKjp-Regular">
             NotoSansCJK-Regular.ttc