Enable filtering menu also when more than 25 items are there

Author: linev

modules/draw.mjs

@@ -144,8 +144,8 @@ const drawFuncs = { lst: [
    { name: clTClonesArray, sameas: clTList },
    { name: clTMap, sameas: clTList },
    { name: clTColor, icon: 'img_color' },
-   { name: clTFile, icon: 'img_file', noinspect: true },
-   { name: 'TMemFile', icon: 'img_file', noinspect: true },
+   { name: clTFile, icon: 'img_file', noinspect: true, pm: true },
+   { name: 'TMemFile', icon: 'img_file', noinspect: true, pm: true },
    { name: clTStyle, icon: 'img_question', noexpand: true },
    { name: 'Session', icon: 'img_globe' },
    { name: 'kind:TopFolder', icon: 'img_base' },

modules/gui/HierarchyPainter.mjs

@@ -2126,7 +2126,7 @@ class HierarchyPainter extends BasePainter {
                if (hitem._childs === undefined)
                   menu.add('Expand', () => this.expandItem(itemname), 'Expand content of object');
                else {
-                  if (sett.handle?.pm && hitem._childs.length) {
+                  if (sett.handle?.pm || (hitem._childs.length > 25)) {
                      menu.add('Filter...', () => menu.input('Enter items to select', hitem._filter, f => {
                         const changed = hitem._filter !== f;
                         hitem._filter = f;