[#45910] fixed tooltip for not linked files

- https://community.openproject.org/work_packages/45910
- added min height to scrollable content in file picker

frontend/src/app/shared/components/storages/file-picker-modal/file-picker-modal.component.ts

@@ -149,7 +149,7 @@ export class FilePickerModalComponent extends FilePickerBaseModalComponent {
       this.isAlreadyLinked(file),
       index === 0,
       this.enterDirectoryCallback(file),
-      isDirectory(file) ? this.text.tooltip.alreadyLinkedDirectory : this.text.tooltip.alreadyLinkedFile,
+      this.tooltip(file),
       {
         selected: this.selection.has(file.id as string),
         changeSelection: () => { this.changeSelection(file); },
@@ -163,4 +163,12 @@ export class FilePickerModalComponent extends FilePickerBaseModalComponent {
 
     return !!found;
   }
+
+  private tooltip(file:IStorageFile):string|undefined {
+    if (!this.isAlreadyLinked(file)) {
+      return undefined;
+    }
+
+    return isDirectory(file) ? this.text.tooltip.alreadyLinkedDirectory : this.text.tooltip.alreadyLinkedFile;
+  }
 }

frontend/src/global_styles/content/work_packages/shared/_file_picker.sass

@@ -29,6 +29,9 @@
 .op-file-picker
   &--scrollable-content
     overflow-y: auto
+    // If there a list in the content that provides tooltips on there items,
+    // we need enough space to display those tooltips
+    min-height: $spot-spacing-5
 
   @media #{$spot-mq-mobile}
     &.spot-modal