[CollapsingToolbarLayout] Added support for multiline RTL when using fade title mode

PiperOrigin-RevId: 368237684
(cherry picked from commit f0ac362)

Author: dsn5ft

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

@@ -675,10 +675,13 @@ private void calculateBaseOffsets() {
 
     float measuredWidth = textToDraw != null
         ? textPaint.measureText(textToDraw, 0, textToDraw.length()) : 0;
-    width = textLayout != null && maxLines > 1 && !isRtl
+    width = textLayout != null && maxLines > 1
         ? textLayout.getWidth()
         : measuredWidth;
-    expandedFirstLineDrawX = textLayout != null ? textLayout.getLineLeft(0) : 0;
+    expandedFirstLineDrawX =
+        textLayout != null
+            ? maxLines > 1 ? textLayout.getLineStart(0) : textLayout.getLineLeft(0)
+            : 0;
 
     final int expandedAbsGravity =
         GravityCompat.getAbsoluteGravity(
@@ -797,7 +800,7 @@ public void draw(@NonNull Canvas canvas) {
   }
 
   private boolean shouldDrawMultiline() {
-    return maxLines > 1 && !isRtl && !useTexture;
+    return maxLines > 1 && (!isRtl || fadeModeEnabled) && !useTexture;
   }
 
   private void drawMultinlineTransition(@NonNull Canvas canvas, float currentExpandedX, float y) {

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

@@ -192,7 +192,7 @@ public StaticLayout build() throws StaticLayoutBuilderCompatException {
 
     end = Math.min(textToDraw.length(), end);
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-      if (isRtl) {
+      if (isRtl && maxLines == 1) {
         alignment = Alignment.ALIGN_OPPOSITE;
       }
       // Marshmallow introduced StaticLayout.Builder which allows us not to use