Custom hover keeps lingering around (#106228)

@Tyriar has fixed this for the September release, but for August we will not use the custom hover in the custom tree view by default. This change is mostly a revert of 874c98d8. In the September iteration, we will go back to using custom hovers by default in the custom tree view.
Fixes #106096

src/vs/workbench/contrib/views/browser/treeView.ts

@@ -40,7 +40,6 @@ import { isFalsyOrWhitespace } from 'vs/base/common/strings';
 import { SIDE_BAR_BACKGROUND, PANEL_BACKGROUND } from 'vs/workbench/common/theme';
 import { IHoverService, IHoverOptions, IHoverTarget } from 'vs/workbench/services/hover/browser/hover';
 import { ActionViewItem } from 'vs/base/browser/ui/actionbar/actionViewItems';
-import { IMarkdownString } from 'vs/base/common/htmlContent';
 import { isMacintosh } from 'vs/base/common/platform';
 
 class Root implements ITreeItem {
@@ -756,6 +755,8 @@ class TreeRenderer extends Disposable implements ITreeRenderer<ITreeItem, FuzzyS
 		}) : undefined;
 		const icon = this.themeService.getColorTheme().type === LIGHT ? node.icon : node.iconDark;
 		const iconUrl = icon ? URI.revive(icon) : null;
+		const canResolve = node instanceof ResolvableTreeItem && node.hasResolve;
+		const title = node.tooltip ? (isString(node.tooltip) ? node.tooltip : undefined) : (resource ? undefined : (canResolve ? undefined : label));
 
 		// reset
 		templateData.actionBar.clear();
@@ -765,7 +766,7 @@ class TreeRenderer extends Disposable implements ITreeRenderer<ITreeItem, FuzzyS
 			const labelResource = resource ? resource : URI.parse('missing:_icon_resource');
 			templateData.resourceLabel.setResource({ name: label, description, resource: labelResource }, {
 				fileKind: this.getFileKind(node),
-				title: '',
+				title,
 				hideIcon: !!iconUrl,
 				fileDecorations,
 				extraClasses: ['custom-view-tree-node-item-resourceLabel'],
@@ -775,7 +776,7 @@ class TreeRenderer extends Disposable implements ITreeRenderer<ITreeItem, FuzzyS
 			fallbackHover = this.labelService.getUriLabel(labelResource);
 		} else {
 			templateData.resourceLabel.setResource({ name: label, description }, {
-				title: '',
+				title,
 				hideIcon: true,
 				extraClasses: ['custom-view-tree-node-item-resourceLabel'],
 				matches: matches ? matches : createMatches(element.filterData),
@@ -810,6 +811,11 @@ class TreeRenderer extends Disposable implements ITreeRenderer<ITreeItem, FuzzyS
 	}
 
 	private setupHovers(node: ITreeItem, htmlElement: HTMLElement, disposableStore: DisposableStore, label: string | undefined): void {
+		if (!(node instanceof ResolvableTreeItem) || (node.tooltip && isString(node.tooltip)) || (!node.tooltip && !node.hasResolve)) {
+			return;
+		}
+		const resolvableNode: ResolvableTreeItem = node;
+
 		const hoverService = this.hoverService;
 		// Testing has indicated that on Windows and Linux 500 ms matches the native hovers most closely.
 		// On Mac, the delay is 1500.
@@ -827,10 +833,8 @@ class TreeRenderer extends Disposable implements ITreeRenderer<ITreeItem, FuzzyS
 			this.addEventListener(DOM.EventType.MOUSE_LEAVE, mouseLeave, { passive: true });
 			this.addEventListener(DOM.EventType.MOUSE_MOVE, mouseMove, { passive: true });
 			setTimeout(async () => {
-				if (node instanceof ResolvableTreeItem) {
-					await node.resolve();
-				}
-				let tooltip: IMarkdownString | string | undefined = node.tooltip ?? label;
+				await resolvableNode.resolve();
+				const tooltip = resolvableNode.tooltip ?? label;
 				if (isHovering && tooltip) {
 					if (!hoverOptions) {
 						const target: IHoverTarget = {