Use Google Sans Text for Cut/Copy/Paste menu

Went with config_bodyFontFamily over config_headlineFontFamily, that
is Google Sans Text, verified by double-checking in Figma that GS Text's
lowercase Y has a curly tail, Google Sans does not.

Screenshots:
Headline/Google Sans: https://screenshot.googleplex.com/6DydogAnRQUBrJr
Body/Google Sans Text: https://screenshot.googleplex.com/ASDMehJDjnkvLUt

Bug: 186819251
Test: Verify curly Y in several invocations of Cut/Copy/Paste across
SysUI and apps.

Change-Id: I78003687c88825cf87cfb875ca7481ca690495ed

core/res/res/layout/floating_popup_menu_button.xml

@@ -51,7 +51,7 @@
         android:gravity="center"
         android:singleLine="true"
         android:ellipsize="end"
-        android:fontFamily="sans-serif-medium"
+        android:fontFamily="@*android:string/config_bodyFontFamily"
         android:textSize="@dimen/floating_toolbar_text_size"
         android:textColor="?attr/floatingToolbarForegroundColor"
         android:background="@null"