omni: overlay: add config_buttonTextAllCaps=false

material3 says that buttons should no longer be all caps

Change-Id: Ia84ee165ea3f0ae61871dc55168af8f0b90751c1
diff --git a/overlay/common/frameworks/base/core/res/res/values/config.xml b/overlay/common/frameworks/base/core/res/res/values/config.xml
index 17db40a..9344d14 100644
--- a/overlay/common/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/common/frameworks/base/core/res/res/values/config.xml
@@ -88,4 +88,6 @@
 
     <!-- Whether this device is supporting the camera toggle -->
     <bool name="config_supportsCamToggle">true</bool>
+
+    <bool name="config_buttonTextAllCaps">false</bool>
 </resources>