Web: Fix presentation of table row when caret moves due to mouse click

Don't read the full row if the last input event was a mouse button
event. We always generate the full line (i.e. each cell in the row)
when the caret moves due to a mouse click. If we think we should
read the full row for each cell in that row, we'll be extremely
chatty and also fail to present the column headers.

src/orca/script_utilities.py

@@ -5316,6 +5316,9 @@ class Utilities:
 
         return not mods or mods & keybindings.SHIFT_MODIFIER_MASK
 
+    def lastInputEventWasMouseButton(self):
+        return isinstance(orca_state.lastInputEvent, input_event.MouseButtonEvent)
+
     def lastInputEventWasPrimaryMouseClick(self):
         event = orca_state.lastInputEvent
         if isinstance(event, input_event.MouseButtonEvent):

src/orca/scripts/web/script_utilities.py

@@ -2848,6 +2848,9 @@ class Utilities(script_utilities.Utilities):
         if self.lastInputEventWasLineNav():
             return False
 
+        if self.lastInputEventWasMouseButton():
+            return False
+
         return True
 
     def isEntryDescendant(self, obj):