[Internal] Fix letter spacing for collapsed text in CollapsingTextHelper

Resolves material-components#5018

Author: pubiqq

lib/java/com/google/android/material/internal/CollapsingTextHelper.java

@@ -1088,8 +1088,7 @@ private void calculateUsingTextSize(final float fraction, boolean forceRecalcula
 
     if (isClose(fraction, /* targetValue= */ 1)) {
       newTextSize = shouldTruncateCollapsedToSingleLine() ? collapsedTextSize : expandedTextSize;
-      newLetterSpacing =
-          shouldTruncateCollapsedToSingleLine() ? collapsedLetterSpacing : expandedLetterSpacing;
+      newLetterSpacing = collapsedLetterSpacing;
       scale =
           shouldTruncateCollapsedToSingleLine()
               ? 1f