Use normal font for Thai

This change also adds workaround to display Thai composing letters
correctly.

Bug: 6753168
Change-Id: Ibd42ebb40df08b5de32b3500f10003c4a5de4897
diff --git a/java/res/xml/kbd_pcqwerty.xml b/java/res/xml/kbd_pcqwerty.xml
index a6ab2ba..777c71a 100644
--- a/java/res/xml/kbd_pcqwerty.xml
+++ b/java/res/xml/kbd_pcqwerty.xml
@@ -21,9 +21,9 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:rowHeight="20%p"
-    latin:verticalGap="@fraction/key_bottom_gap_5rows"
-    latin:keyLetterSize="@fraction/key_letter_ratio_5rows"
-    latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5rows"
+    latin:verticalGap="@fraction/key_bottom_gap_5row"
+    latin:keyLetterSize="@fraction/key_letter_ratio_5row"
+    latin:keyShiftedLetterHintRatio="@fraction/key_uppercase_letter_ratio_5row"
     latin:touchPositionCorrectionData="@null"
 >
     <include