Fix terminal icon picker issues

Fixes #251428

src/vs/workbench/contrib/terminal/browser/terminalIconPicker.ts

@@ -45,8 +45,7 @@ export class TerminalIconPicker extends Disposable {
 
 		this._iconSelectBox = instantiationService.createInstance(WorkbenchIconSelectBox, {
 			icons: icons.value,
-			inputBoxStyles: defaultInputBoxStyles,
-			showIconInfo: true
+			inputBoxStyles: defaultInputBoxStyles
 		});
 	}
 
@@ -58,18 +57,21 @@ export class TerminalIconPicker extends Disposable {
 				this._iconSelectBox.dispose();
 			}));
 			this._iconSelectBox.clearInput();
+			const body = getActiveDocument().body;
+			const bodyRect = body.getBoundingClientRect();
 			const hoverWidget = this._hoverService.showInstantHover({
 				content: this._iconSelectBox.domNode,
-				target: getActiveDocument().body,
+				target: {
+					targetElements: [body],
+					x: bodyRect.left + (bodyRect.width - dimension.width) / 2,
+					y: bodyRect.top
+				},
 				position: {
 					hoverPosition: HoverPosition.BELOW,
 				},
 				persistence: {
 					sticky: true,
 				},
-				appearance: {
-					showPointer: true
-				}
 			}, true);
 			if (hoverWidget) {
 				this._register(hoverWidget);