Fix outline view double-click not jumping when openMode is doubleClick

[Copilot]

When workbench.list.openMode is set to doubleClick, double-clicking an entry in the Outline view selects the symbol's full range in the editor (e.g. the entire function body) instead of jumping the cursor to it.

Root cause

OutlinePane's tree.onDidOpen handler forwards isDoubleClick directly as the select argument to IOutline.reveal(...). For DocumentSymbolsOutline, that flag switches the editor selection between the symbol's full range and a collapsed cursor at the start of its selectionRange. In the default singleClick mode this is fine — single-click jumps, double-click selects the range. In doubleClick mode, single clicks no longer fire onDidOpen at all, so a double-click is the user's normal "open" gesture but still triggers the full-range selection.

Change

• In src/vs/workbench/contrib/outline/browser/outlinePane.ts, gate the "select symbol range" behavior on openMode === 'singleClick'. When openMode=doubleClick, double-click now jumps to the symbol position, matching the default-mode single-click behavior.

const isDoubleClick = e.browserEvent?.type === 'dblclick';
const openOnSingleClick = this.configurationService.getValue('workbench.list.openMode') !== 'doubleClick';
const selectSymbolRange = isDoubleClick && openOnSingleClick;
...
await newOutline.reveal(e.element, e.editorOptions, e.sideBySide, selectSymbolRange);