fix: prevent history show prev/next in composing event (microsoft#184014)

Author: songlinn

src/vs/platform/history/browser/contextScopedHistoryWidget.ts

@@ -113,6 +113,7 @@ KeybindingsRegistry.registerCommandAndKeybindingRule({
 	when: ContextKeyExpr.and(
 		ContextKeyExpr.has(HistoryNavigationWidgetFocusContext),
 		ContextKeyExpr.equals(HistoryNavigationBackwardsEnablementContext, true),
+		ContextKeyExpr.not('isComposing'),
 		historyNavigationVisible.isEqualTo(false),
 	),
 	primary: KeyCode.UpArrow,
@@ -128,6 +129,7 @@ KeybindingsRegistry.registerCommandAndKeybindingRule({
 	when: ContextKeyExpr.and(
 		ContextKeyExpr.has(HistoryNavigationWidgetFocusContext),
 		ContextKeyExpr.equals(HistoryNavigationForwardsEnablementContext, true),
+		ContextKeyExpr.not('isComposing'),
 		historyNavigationVisible.isEqualTo(false),
 	),
 	primary: KeyCode.DownArrow,