Remove fixed-depth x-coordinate gate for task list taps

  The previous check rejected taps beyond a single leading margin width, preventing interaction with indented checkboxes. The handler now performs its own nesting-aware check, so the outer gate only needs to verify the editor is enabled.

Author: zwarm

aztec/src/main/kotlin/org/wordpress/aztec/AztecText.kt

@@ -751,16 +751,11 @@ open class AztecText : AppCompatEditText, TextWatcher, UnknownHtmlSpan.OnUnknown
         x += scrollX
         y += scrollY
 
-        // We check whether the user tap on a checkbox of a task list. The aztec text field should be enabled and we
-        // check whether the tap event was on the leading margin which is where the checkbox is located plus a padding
-        // space used to increase the target size for the tap event.
-        if (isEnabled &&
-            x + totalPaddingStart <= (blockFormatter.listStyleLeadingMargin() + AztecTaskListSpan.PADDING_SPACE)) {
+        // We check whether the user tap on a checkbox of a task list. The handler performs its
+        // own nesting-aware x-coordinate check, so we only need a rough gate here.
+        if (isEnabled) {
             val line = layout.getLineForVertical(y)
             val off = layout.getOffsetForHorizontal(line, x.toFloat())
-            // If the tap event was on the leading margin, we double check whether we are tapping on a task list item.
-            // If that is true, then we return false because we don't want to propagate the tap event to stop moving
-            // the cursor to the item tapped.
             if (getTaskListHandler()?.handleTaskListClick(
                 text,
                 off,