[FloatingActionButton] Fix the width calculation in the wrap_content extend strategy

Resolves #4695
Resolves #4630

  - 1561cbd by pubiqq <[email protected]>

PiperOrigin-RevId: 759607074
(cherry picked from commit a3a7d86)

Author: pubiqq

lib/java/com/google/android/material/floatingactionbutton/ExtendedFloatingActionButton.java

@@ -293,7 +293,8 @@ private Size getSizeFromExtendStrategyType(@ExtendStrategy int extendStrategyTyp
           @Override
           public int getWidth() {
             return getMeasuredWidth()
-                - getCollapsedPadding() * 2
+                - ExtendedFloatingActionButton.this.getPaddingStart()
+                - ExtendedFloatingActionButton.this.getPaddingEnd()
                 + extendedPaddingStart
                 + extendedPaddingEnd;
           }