zoom mode is meaningless when reflowing, so disable zoom mode options in reflow mode

frontend/apps/reader/modules/readercropping.lua

@@ -85,7 +85,9 @@ function ReaderCropping:onPageCrop(mode)
     -- backup original zoom mode as cropping use "page" zoom mode
     self.orig_zoom_mode = self.view.zoom_mode
     if mode == "auto" then
-        self:setCropZoomMode(true)
+        if self.document.configurable.text_wrap ~= 1 then
+            self:setCropZoomMode(true)
+        end
         return
     end
     -- backup original view dimen

frontend/apps/reader/modules/readerzooming.lua

@@ -295,6 +295,9 @@ function ReaderZooming:addToMainMenu(tab_item_table)
     if self.ui.document.info.has_pages then
         table.insert(tab_item_table.typeset, {
             text = _("Switch zoom mode"),
+            enabled_func = function()
+                return self.ui.document.configurable.text_wrap ~= 1
+            end,
             sub_item_table = {
                 {
                     text = _("Zoom to fit content width"),