fix source filters (microsoft#238134)

Author: sandy081

src/vs/workbench/contrib/output/browser/output.contribution.ts

@@ -699,7 +699,7 @@ class OutputContribution extends Disposable implements IWorkbenchContribution {
 					if (!source.name) {
 						continue;
 					}
-					const sourceFilter = `${channel.id}-${source.name}`;
+					const sourceFilter = `${channel.id}:${source.name}`;
 					disposables.add(registerAction2(class extends Action2 {
 						constructor() {
 							super({

src/vs/workbench/contrib/output/browser/outputView.ts

@@ -186,7 +186,7 @@ export class OutputViewPane extends FilterViewPane {
 
 	private checkMoreFilters(): void {
 		const filters = this.outputService.filters;
-		this.filterWidget.checkMoreFilters(!filters.trace || !filters.debug || !filters.info || !filters.warning || !filters.error || (!!this.channelId && filters.sources.includes(this.channelId)));
+		this.filterWidget.checkMoreFilters(!filters.trace || !filters.debug || !filters.info || !filters.warning || !filters.error || (!!this.channelId && filters.sources.includes(`,${this.channelId}:`)));
 	}
 
 	private clearInput(): void {